2671 . The average age of a group of 15 employees is 24 years. If 5 more employees join the group, the average age increases by 2 years. Find the average age of the new employees.

A. 35
B. 30
C. 24
D. 32

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Answer: Option D

Explanation:

Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

A. 35years
B. 40years
C. 45years
D. 50years
E. None of these

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Answer: Option B

Explanation:

3 years ago their average age was = 27 years

At present their average age = ( 27 + 3) = 30 years

At present the summation of their age = 30×3 = 90 years

Again,

5 years ago, the average age of child and wife was = 20 years

At present their average age = 20 + 5 = 25 years.

At present the summation of their age = 25×2 = 50 years

So, at present the husbands age = 90 - 50 = 40 years

2673 . The average age of husband,wife and their child 3years ago was 27 years and that of wife and the child 5years ago was 20years.The present age of husband is :

A. 35years
B. 40years
C. 45years
D. 50years

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Answer: Option B

Explanation:

The total of the present ages of husband, wife and child = 3 x 27 + 3 x 3 = 90 years

The total of the present ages of wife and child = 2 x 20 + 2 x 5 = 50 years

So, the present age of the husband = 90 - 50 = 40 years

2674 . The average age of the 20 aspirants of a class is 19.2 years. After some time two more aspirants join them and then average is increased by 0.3 years. Find the difference between the age of new aspirants .

A. 12
B. 15
C. 18
D. None of these

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Answer: Option D

Explanation:

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 25 years
B. 30 years
C. 28 years
D. 32 years

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Answer: Option B

Explanation:

মনে করি,

তিনজনের গড় বয়স ২৪

অতএব, ৩ জনের মোট বয়স ২৪*৩=৭২

দেওয়া আছে,

১ জনের বয়স ২১ বছর হলে, ২ জনের বয়স ২১*২=৪২

মনে করি,

১ জনের বয়স সর্বোচ্চ ক ববছর

প্রশ্নমতে,

২১*২+ক= ২৪*৩

বা, ৪২+ক=৭২

বা, ক=৭২-৪২

বা, ক =৩০

2676 . The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?

A. 18 years
B. 8 years
C. 16 years
D. 42 years

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Answer: Option A

Explanation:

2677 . The average attendance of a college for the first three days of a week is 325 and first four days is 320. How many were present on the fourth day?

A. 300
B. 315
C. 305
D. 350

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Answer: Option C

Explanation:

4th days attendance = (320×4 - 325×3)

= 1280 - 975 = 305

Ans.

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

A. 1044
B. 2088
C. 720
D. 324

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Answer: Option B

Explanation:

Total cost of 5 apples & 4 mangoes = 324 tk

Total cost of 7 apples & 8 mangoes = 720 tk

( + ) Total cost of 12 apples & 12 mangoes = 1044 tk

Total cost of 24 apples & 12 mangoes = 1044 ×2 = 2088 tk

Bangladesh Bank - Assistant Director - 2009

A. 1300
B. 1200
C. 1000
D. 800

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Answer: Option A

Explanation:

Hints:

১০ জন লোকের মোট মজুরি ( ১০×৪০০) টাকা = ৪০০০ টাকা

৩০০ টাকা করে ৯ জনের মজুরি = ( ৩০০×৯) = ২৭০০ টাকা

সম্ভাব্য সর্বোচ্চ মজুরি ( ৪০০০ - ২৭০০) টাকা = ১৩০০ টাকা।

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 800
B. 1000
C. 1200
D. 1300

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Answer: Option D

Explanation:

Hints:

১০ জন লোকের মোট মজুরি ( ১০×৪০০) টাকা = ৪০০০ টাকা

৩০০ টাকা করে ৯ জনের মজুরি = ( ৩০০×৯) = ২৭০০ টাকা

সম্ভাব্য সর্বোচ্চ মজুরি ( ৪০০০ - ২৭০০) টাকা = ১৩০০ টাকা।

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

A. 3 : 2
B. 4 : 3
C. 7 : 5
D. None

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Answer: Option C

Explanation:

গ্যাস ট্রান্সমিশন কোম্পানি লিমিটেড | সহকারী ব্যবস্থাপক | ২০.০৪.২০১৮

A. 50, 20
B. 30, 20
C. 20, 30
D. 60, 50

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Answer: Option A

Explanation:

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 4000
B. 3500
C. 4050
D. 5000

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Answer: Option A

Explanation:

P + Q = 10100

Q + R = 12500

P + R = 10400

Now,

P - Q = 10400 - 12500

P - Q = -2100

P + Q = 10100

So, 2P = 8000

Or, P = 4000

2684 . The average monthly income of P and Q is Tk.5050. The average monthly income of Q and R is Tk.6250 and the average monthly income of P and R is Tk.5200. Calculate the monthly income of P.

A. Tk.4000
B. Tk.6100
C. Tk.6400
D. Tk. 16500

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Answer: Option A

Explanation:

P + Q = 10100

Q + R = 12500

P + R = 10400

Now,

P - Q = 10400 - 12500

P - Q = -2100

P + Q = 10100

So, 2P = 8000

Or, P = 4000.

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. -50
B. -60
C. -100
D. -65
E. None of these

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Answer: Option E

Explanation:

শর্তানুসারে n এর মান 50 থেকে ছোট কিন্তু 20 থেকে বড়। 5 দ্বারা ভাগ করলে 2 অবশিষ্ট থাকবে ।
সংখ্যাটি হতে পারে 22,27,32,37,42 কিংবা 47
7 দ্বারা ভাগ করলে অবশিষ্ট থাকবে '2'

2671 . The average age of a group of 15 employees is 24 years. If 5 more employees join the group, the average age increases by 2 years. Find the average age of the new employees.

2672 . The average age of a husband, wife and their child 3 years ago was 27 years and the average age of the wife and the child 5 years ago was 20 years. What is the percent age of the husband?

2673 . The average age of husband,wife and their child 3years ago was 27 years and that of wife and the child 5years ago was 20years.The present age of husband is :

2674 . The average age of the 20 aspirants of a class is 19.2 years. After some time two more aspirants join them and then average is increased by 0.3 years. Find the difference between the age of new aspirants .

2675 . The average age of the three is 24 years. If none of them is below 21 years of age then what is the maximum age of any of them?

2676 . The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?

2677 . The average attendance of a college for the first three days of a week is 325 and first four days is 320. How many were present on the fourth day?

2678 . The average cost of 5 apples and 4 mangoes is 36 taka. The average cost of 7 apples and 8 mangoes is 48 taka. Find the total cost of 24 apples and 24 mangoes.

2679 . The average daily wage of 10 workers is Tk. 400 If the lowest wage is Tk.300, then what is the possible maximum wage?

2680 . The average daily wage of 10 workers is Tk.400. If the lowest wage is Tk.300, then what is the possible maximum wage?

2681 . The average daily wages of female workers in a factory is Tk. 30 and than of male workers is Tk. 42. If the average wages of all the workers is Tk. 37, what is the ratio of male to female workers.

2682 . The average height of girls in a class is 5 ft and that of boys is 5.7 ft. If the average height of the students in class is 5.5 ft, what could be the possible strength of boys and girls respectively in the class.

2683 . The average monthly income of P and Q is Tk. 5050. The average monthly income of Q and R is Tk. 6250 and the average monthly income of P and R is Tk. 5200. The monthly income of P is Tk. -

2684 . The average monthly income of P and Q is Tk.5050. The average monthly income of Q and R is Tk.6250 and the average monthly income of P and R is Tk.5200. Calculate the monthly income of P.

2685 . The average of 10 integers is -16. If the sum of 6 of them is 100, what is the average of the other 4 ?

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