406 . Robi takes 3 minutes to inspect a car , and Sashi takes 4 minutes to inspect a car . If they both start inspecting different cars at 8:30 AM, what would be the ratio of the number of cars inspected by Robi and Sashi by 8:54 AM of the same day ?

A. 3:2
B. 4:3
C. 2:6
D. 8:12
E. None of them

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Answer: Option B

Explanation:

(8:54 - 8:30) = 24
Robi's cars = 24/3 = 8
Sashi's cars = 24/4 = 6
Ratio = 8:6 = 4:3

Bangladesh Bank - Assistant Director - 2012

A. Tk.2000
B. Tk.1200
C. Tk.1500
D. Tk.2500
E. None of these

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Answer: Option C

Explanation:

ধরি, মোট টাকার পরিমাণ x

আনুপাতিক রাশিগুলোর যোগফল = 2 + 3 + 7 = 12

সাইফের অংশ = x এর 2/12

= x/6

ডা. নাজমার অংশ = x এর 3/12

= x/4

শাকিলের অংশ = x এর 7/12

= 7x/12

প্রশ্নমতে, 7x/12 - ( x/6 + x/4) = 1500

= > 7x/12 - 5x/12 = 1500

= > 2x/12 = 1500

= > x/6 = 1500

= > x = 9000

মোট টাকার পরিমাণ 9000 টাকা৷

সাইফের অংশ = x/6 = 9000/6 = 1500 টাকা (উওর

408 . Seven (7) is 5% of which number?

A. 128
B. 156
C. 140
D. 135

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Answer: Option C

Explanation:

409 . Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

A. 12
B. 16
C. 24
D. 32
E. none of these

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Answer: Option A

Explanation:

6 men if works 8 hours /day need 5 days

4 men if works 5 hours/day need = ( 5×6×8)/ 4×5 = 12 days

410 . Six years ago, the ratio of ages of Kunal and Sagars was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. what is Sagar's age at present ?

A. 18 years
B. 20 years
C. 16 years
D. 22 years

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Answer: Option C

Explanation:

Let the ages of Kunal and Sugar 6 years ago be 6x and 5x years respectively.
Then, {(6x + 6) + 4}/{(5x + 6) + 4} = 11/10
⇒10(6x + 10) = 11(5x + 10)
⇒5x = 10
⇒x = 1
∴ Sagar's present age = (5x + 6) = 16 years.

অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 6 h
B. 2 h
C. 8 h
D. 10 h
E. 12 h

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Answer: Option E

Explanation:

412 . Square of a number plus two times the number equal 63. What is the number ?

A. 7
B. 9
C. -9
D. 7 or -9
E. 8

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Answer: Option D

Explanation:

Let the number be x.

Then, x^2 + 2x = 63 [according to the question]

or, x^2 + 2x - 63 = 0

or, x^2 + 9x - 7x - 63 = 0

or, (x + 9) (x - 7) = 0

Therefore, x = 7 or - 9.

Bangladesh Bank - Assistant Director - 2011

A. √7 kms
B. 5 kms
C. 8 kms
D. 2√3 kms
E. 25 kms

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Answer: Option B

Explanation:

414 . Successive discount of 25% and 20% are equal to a single discount of—

A. 40%
B. 35%
C. 32%
D. None of these

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Answer: Option A

Explanation:

415 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

A. 69
B. 53
C. 65
D. 72

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Answer: Option A

Explanation:

Let 4 consecutive even numbers be x, x + 2, X + 4 and x + 6 respectively.
3 consecutive odd numbers be y, y + 2 and y + 4
According to question,
[x + x + 2 + x + 4 + x + 6]−[y + y + 2 + y + 4] = 81
= > (4x + 12)−(3y + 6) = 81
4x−3y = 81−12 + 6
4x−3y = 75
x + 4 = 59
On solving equations (i) and (ii), we get
X = 36
y = 23
The sum of largest odd and even number = x + 6 + y + 4 = x + y + 10 = 36 + 23 + 10 = 69

Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 240
B. 180
C. 360
D. 270

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Answer: Option C

Explanation:

সামান্তরিক একট চতুর্ভুজ । আর যেকোনো চতুর্ভজের 4টি অন্ত:কোণের সমষ্টি 360 ডিগ্রি

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 4
B. 20
C. 30
D. 40

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Answer: Option D

Explanation:

40 isn't a factor of 180.so it's answer

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 179
B. 78
C. 89
D. 72
E. 71

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Answer: Option E

Explanation:

419 . The amount of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 112 hours, how many hours did the secretary, who worked the longest spend on the project?

A. 80
B. 70
C. 56
D. 16

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Answer: Option B

Explanation:

Sum of ratio = 1+2+5 = 8

So, the hours done by longest spend on the project = (112*5)/8

= 70 (Ans)

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 2 cm
B. 3 cm
C. 4 cm
D. 5 cm

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Answer: Option A

Explanation:

x + 2x + 3x = 180 degrees

6x = 180

x = 180/6

x = 30 degrees

The right triangle has vertices A, B, and C of 30, 60, and 90 degrees.

A = 30, B = 60, C = 90 degrees

smallest side is opposite 30 degrees (A) = opp = 1 cm

longest side is hypotenuse opposite 90 degrees (C) = hyp

1/hyp = sin(30)

1/hyp = 0.5

hyp = 1/.5 = 2

বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

406 . Robi takes 3 minutes to inspect a car , and Sashi takes 4 minutes to inspect a car . If they both start inspecting different cars at 8:30 AM, what would be the ratio of the number of cars inspected by Robi and Sashi by 8:54 AM of the same day ?

407 . Saif, Dr. Nazma and Shakil divided a sum of money among themselves in the ratio 2 : 3 : 7. Find the share of Saif if the total sare of Saif and Dr. Nazma together is Tk.1500 less than that of Shakil?

408 . Seven (7) is 5% of which number?

409 . Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

410 . Six years ago, the ratio of ages of Kunal and Sagars was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. what is Sagar's age at present ?

411 . Speed of the boat in standing water is 6 km/h and the speed of the stream is 2 km/h. What will be the total time if a man goes by the boat upstream 32 km and comes back to the starting point?

412 . Square of a number plus two times the number equal 63. What is the number ?

413 . Starting from Town S, Mr. Ahsan drove straight East for 3 kms, then he turned left and drove straight North for 4 kms and stopped at Town T. What is the straight-line distance from Town S to Town T?

414 . Successive discount of 25% and 20% are equal to a single discount of—

415 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

416 . Sum of the interior angles of parallelogram is _____degree.

417 . The 180 students in a group are to be seated in rows to that there are an equal number of students in each row. Each of the following could be the number of rows except-

418 . The 356 members of metro-chamber of commerce will vote to choose a president. With 5 candidates seeking office, what is the least number of votes a successful candidate could receive and yet have more votes than any other candidate?

419 . The amount of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 112 hours, how many hours did the secretary, who worked the longest spend on the project?

420 . The angles of a triangle are in the proportion of 1:2:3 and the length of the smallest side is 1 c. what is the length of the longest side of the triangle?

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