2866 . The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight in pounds for the rest of the women?

A. 100
B. 110
C. 120
D. 135

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Answer: Option A

Explanation:

Total weight of 20 women = 20 x 130 = 2600 pounds

Total weight of 75% of 20 = 15 women = 15 x 140 = 2100 pounds

Total weight of the rest 5 women = 2600 - 2100 = 500 pounds

Then, the average weight of these 5 women = 500/5 = 100 pounds.

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (10-11-2023)

A. 37
B. 35
C. 33
D. 32

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Answer: Option A

Explanation:

Total Weight = (33*3) kg = 99 kg

Let,

Two friends minimum weight = 31 kg and 31kg

So, third friend Maximum weight = (99 - 31 - 31)kg = 37 kg .

Bangladesh Bank - Officer - 2001

A. 60
B. 70
C. 75
D. 80

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Answer: Option D

Explanation:

2869 . The average weight of 8 people increases by 2.5 kg when a new person comes in place of one of them weighting 65 kg. What might be the weight of the new person?

A. 85 kg
B. 80 kg
C. 75 kg
D. Cannot be determined
E. None of these

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Answer: Option A

Explanation:

Let the average of 8 people be x kg

And the weight of the new person be y kg

Sum of 8 people weight is

⇒ 8 × x = 8x kg

When the person is replaced.

⇒ 8x + y - 65 = 8 × (x + 2.5)

⇒ 8x + y - 65 = 8x + 20

⇒ y = 65 + 20 = 85 kg

2870 . The average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is .

A. 17 kg
B. 31 kg
C. 20 kg
D. None of these

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Answer: Option B

Explanation:

A, B ও C এর গড় ওজন = 45 কেজি

৩ জনের ওজনের যোগফল = (45x3) = 135 কেজি

A ও B এর গড় ওজন = 40 কেজি

A ও B এর ওজনের যোগফল = (40x2) = 80 কেজি

B ও C এর গড় ওজন = 43 কেজি

B ও C এর ওজনের যোগফল = (43x2) = 86 কেজি

A+B+B+C এর ওজনের যোগফল = (80+86) = 166 কেজি

বা,A+B+C+B=166

বা,135+B=166 (মান বসিয়ে পাই A+B+C=135)

বা,B=166-135

=31

সুতরাং, B এর ওজন = (166-135) = 31 কেজি |

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || অফিসার জেনারেল (10-03-2023)

A. 93.6 kg
B. 94 kg
C. 93.4 kg
D. 94.6 kg

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Answer: Option A

Explanation:

Total weight including teacher = 09.2x18 = 1623.6
Total weight of 17 students = 90x17 = 1530
So, the weight of teacher = 1623.6 - 1530 = 93.6 kg

Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 180 runs
B. 170 runs
C. 174 runs
D. 168 runs

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Answer: Option C

Explanation:

Let the lowest score in one innings be x. Then,
Highest score in an innings = x + 172
Total runs in 40 innings = 40 x 50 = 2000
Total runs in 38 innings = 38 x 48 = 1824
Given, 2000 - {x + (x + 172)} = 1824
⇒ 1828 - 2x = 1824 ⇒ 2x = 4 ⇒ x = 2
∴ Highest score = 172 + 2 = 174

সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

A. 78
B. 82.5
C. 58
D. 67.5

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Answer: Option A

Explanation:

2874 . The breadth of a rectangular field is 5m. Its length is thrice the breadth. What is the total length of facing required to the if the fence is to be built leaving 0.5 m of space from each side ?

A. 56m
B. 70m
C. 44m
D. 38m

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Answer: Option C

Explanation:

Let's break down the problem step by step:

The breadth of the rectangular field is given as 5 meters.
The length is three times the breadth, which means the length is 3 * 5 = 15 meters.
Now, we need to calculate the total length of fencing required to enclose the field while leaving 0.5 meters of space from each side. This means the effective length and breadth of the field, including the space, will be increased by 0.5 meters on each side.

Effective breadth = 5 meters + 0.5 meters + 0.5 meters = 6 meters Effective length = 15 meters + 0.5 meters + 0.5 meters = 16 meters

Now, we can calculate the total length of fencing required, considering the effective length and breadth:

Total length of fencing = 2 * (Effective length + Effective breadth)

Total length of fencing = 2 * (16 meters + 6 meters)

Total length of fencing = 2 * 22 meters

Total length of fencing = 44 meters

So, the total length of fencing required to enclose the field while leaving 0.5 meters of space from each side is 44 meters.

2875 . The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?

A. 37500 sq.m
B. 40000 sq.m
C. 48000 sq.m
D. 18750 sq.m

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Answer: Option A

Explanation:

Bangladesh Bank - Officer(Cash) - 2016

A. 23 years
B. 24 years
C. 25 years
D. 26 years
E. None of these

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Answer: Option A

Explanation:

Let the average age of the whole team by x years

11x - ( 26 + 29) = 9 ( x - 1)

2x = 46

x = 23

2877 . The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargoan. By what percent is the charge of a room at Westin is greater than that of Sonargaon?

A. 15%
B. 17%
C. 19%
D. 20%

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Answer: Option D

Explanation:

Let the charges at Sherato, Westin and Sonargaon be A, B & C respectively.

Now, A = B - 25% of B = B - 0.25B = 0.75B = 3B/4

or, B = 4A/3

Again, A = C - 10% of C = C - 0.1C = 0.9C = 9C/10

or, C = 10A/9

Now, B - C = 4A/3 - 10A/9 = (12A - 10A) / 9 = 2A/9

Charge at westin is greater than charge at Sonargaon by (2A/9) / (10A/9) × 100% = 20%

2878 . The city library donated some books to a class. If each student takes 4 books. there will be 20 books left. If 3 students do not take a book and the rest of the students take 5 books each, there will be no books left. How many books were donated to the class?

A. 120
B. 140
C. 160
D. 175

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Answer: Option C

Explanation:

Let "x" be the number of students in the class, and "b" be the number of books donated to the class.

We are given two conditions:

If each student takes 4 books, there will be 20 books left. This can be expressed as: x * 4 + 20 = b

If 3 students do not take a book and the rest take 5 books each, there will be no books left. This can be expressed as: (x - 3) * 5 = b

Now, we have a system of two equations:

x * 4 + 20 = b
(x - 3) * 5 = b

We can solve this system of equations to find the values of "x" and "b."

First, let's simplify equation 2:

5x - 15 = b

Now, we have the system:

x * 4 + 20 = b
5x - 15 = b

Since both equations equal "b," we can set them equal to each other:

x * 4 + 20 = 5x - 15

Now, solve for "x":

4x + 20 = 5x - 15

Subtract 4x from both sides:

20 = x - 15

Add 15 to both sides:

x = 35

So, there are 35 students in the class. Now, we can find the number of books donated (b) using either of the original equations. Let's use the first one:

x * 4 + 20 = b 35 * 4 + 20 = b 140 + 20 = b b = 160

Therefore, 160 books were donated to the class.

সমন্বিত ৭ ব্যাংক || সিনিয়র অফিসার-05-11-2021 ||

A. 15°
B. 25°
C. 30°
D. 35°

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Answer: Option A

Explanation:

Let angle =x

complement =90−x
90−x=x+60 (Given)
2x=30
x=15∘

Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

A. 60
B. 62
C. 64
D. 66

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Answer: Option D

Explanation:

Compound interest = C - P = P(1 + r)n - P

= 200 x (1 + 0.1)3 - 200

= 66.2 TK (Ans)

2866 . The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight in pounds for the rest of the women?

2867 . The average weight of 3 friends is 33 kg. None of the friends weights less than 31 kg . What can be the maximum weight of any three friends ?

2868 . The average weight of 6 persons of a group is 75 kg.If a person weighting 50 kg leaves the group, what will be the average weight of the group m?

2869 . The average weight of 8 people increases by 2.5 kg when a new person comes in place of one of them weighting 65 kg. What might be the weight of the new person?

2870 . The average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is .

2871 . The average weight of teacher is also included, then the average weight is increased by 200 grams. Find the weight of the teacher?

2872 . The batting average for 40 innings of a cricket player is 50 runs. His highest score in an innings exceeds his lowest score by 172 runs. If these two innings are excluded, the average score of the remaining 38 innings is 48 runs. Find his highest score in

Let the lowest score in one innings be x. Then,
Highest score in an innings = x + 172
Total runs in 40 innings = 40 x 50 = 2000
Total runs in 38 innings = 38 x 48 = 1824
Given, 2000 - {x + (x + 172)} = 1824
⇒ 1828 - 2x = 1824 ⇒ 2x = 4 ⇒ x = 2
∴ Highest score = 172 + 2 = 174

2873 . The boys and girls in a college are ratios 3 : 2. If 20% of the boys and 25% of the girls are adults, the percentage of students who are not adults is--

2874 . The breadth of a rectangular field is 5m. Its length is thrice the breadth. What is the total length of facing required to the if the fence is to be built leaving 0.5 m of space from each side ?

2875 . The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?

2877 . The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargoan. By what percent is the charge of a room at Westin is greater than that of Sonargaon?

2878 . The city library donated some books to a class. If each student takes 4 books. there will be 20 books left. If 3 students do not take a book and the rest of the students take 5 books each, there will be no books left. How many books were donated to the class?

2879 . The complement of an angle exceeds the angle by 60°. Then the angle is equal to -

2880 . The compound interest (in taka) on Tk.200 at 10% in 3 years is approximetely:

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক

2866 . The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight in pounds for the rest of the women?

2867 . The average weight of 3 friends is 33 kg. None of the friends weights less than 31 kg . What can be the maximum weight of any three friends ?

2868 . The average weight of 6 persons of a group is 75 kg.If a person weighting 50 kg leaves the group, what will be the average weight of the group m?

2869 . The average weight of 8 people increases by 2.5 kg when a new person comes in place of one of them weighting 65 kg. What might be the weight of the new person?

2870 . The average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is .

2871 . The average weight of teacher is also included, then the average weight is increased by 200 grams. Find the weight of the teacher?

2872 . The batting average for 40 innings of a cricket player is 50 runs. His highest score in an innings exceeds his lowest score by 172 runs. If these two innings are excluded, the average score of the remaining 38 innings is 48 runs. Find his highest score in

Let the lowest score in one innings be x. Then, Highest score in an innings = x + 172 Total runs in 40 innings = 40 x 50 = 2000 Total runs in 38 innings = 38 x 48 = 1824 Given, 2000 - {x + (x + 172)} = 1824 ⇒ 1828 - 2x = 1824 ⇒ 2x = 4 ⇒ x = 2 ∴ Highest score = 172 + 2 = 174

2873 . The boys and girls in a college are ratios 3 : 2. If 20% of the boys and 25% of the girls are adults, the percentage of students who are not adults is--

2874 . The breadth of a rectangular field is 5m. Its length is thrice the breadth. What is the total length of facing required to the if the fence is to be built leaving 0.5 m of space from each side ?

2875 . The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?

2877 . The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargoan. By what percent is the charge of a room at Westin is greater than that of Sonargaon?

2878 . The city library donated some books to a class. If each student takes 4 books. there will be 20 books left. If 3 students do not take a book and the rest of the students take 5 books each, there will be no books left. How many books were donated to the class?

2879 . The complement of an angle exceeds the angle by 60°. Then the angle is equal to -

2880 . The compound interest (in taka) on Tk.200 at 10% in 3 years is approximetely:

Let the lowest score in one innings be x. Then,
Highest score in an innings = x + 172
Total runs in 40 innings = 40 x 50 = 2000
Total runs in 38 innings = 38 x 48 = 1824
Given, 2000 - {x + (x + 172)} = 1824
⇒ 1828 - 2x = 1824 ⇒ 2x = 4 ⇒ x = 2
∴ Highest score = 172 + 2 = 174