601 . 4% of which number is 20?

A. 400
B. 500
C. 700
D. 450

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Answer: Option B

Explanation:

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602 . 4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days. In how many will 10 women complete it?

A. 40 days
B. 32 days
C. 36 days
D. 34 days

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Answer: Option A

Explanation:

Basic bank recruitment 2018; auditor 26.01.2018 || Image 2018

A. 100
B. 80
C. 60
D. 50

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Answer: Option D

Explanation:

X% o 160 = 40% of 200

or, X = 40 x 200 / 160 = 50

So, 50% of 160 is equal to 40% of 200.

604 . 40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390. The annual income of each executive is $420. What is the average annual income of all the employees in the factory together?

A. 405
B. 408
C. 415
D. 390

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Answer: Option B

Explanation:

Standard Bank Plc || Trainee Assistant Officer (15-03-2025) || 2025

A. 16.089
B. 16.35
C. 16.944
D. 16.89

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Answer: Option C

Explanation:

48.950 - 32.006 = 16.944

পূবালী ব্যাংক লিমিটেড || প্রবেশনারি অফিসার (30-09-2023) || 2023

A. (x + 2)(x - 2)(2x + 3)(2x - 3)
B. (2x + 1)(2x - 1)(2 + 6)(x - 6)
C. (x + 3)(x - 3)(2x + 2)(2x - 2)
D. (x + 2)(2x - 3)(2x + 3)(3x + 2)

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Answer: Option A

Explanation:

607 . 5% of which number is 25?

A. 5
B. 250
C. 500
D. None of these

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Answer: Option C

Explanation:

Let the number be z.

5% of z is 25

i.e, (5/100)z = 25

» z = (25 × 100)/5

» z = 500

So, The number is 500.

608 . 5.125/2.223 =?

A. 2.053
B. 2.305
C. 2.501
D. 2.522

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Answer: Option B

Explanation:

5.125/2.223=2.30544309492

609 . 5 years ago the ratio of father's age to son's age was 5 : 1 and 2 years later father's age will be 3 times his son's age. What is the ratio of their present age?

A. 5 : 2
B. 7 : 3
C. 10 : 3
D. 11 : 7

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Answer: Option C

Explanation:

let, the present ages of the son and the father are a and b, respectively.

The age of the father 5 years ago was five times the age of his son.

a - 5 = 5(b - 5)

or, a – 5 = 5b - 25

∴ 5b - a = 20 - - - - - - - - - (1)

2 years hence, the father’s age will be thrice that of his son.

a + 2 = 3(b + 2)

or, a + 2 = 3b + 6

∴ a – 3b = 4 - - - - - - - - - - - - (2)

On adding (1) and (2), we get:

2b = 24

∴b = 12

Substituting b = 12 in equation (2), we ge, a = 40

Ratio of their present ages = a:b = 40:12 = 10:3

ans: 10:3

610 . 50% of a% of b is 75% of b% of C. Which of the following is C ?

A. 1.5b
B. 0.667a
C. 0.5a
D. 1.25a

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Answer: Option B

Explanation:

50% of a% of b% = 75% of b% of c

50/100 × a/100 × b = 75/100 × b/100× c

50 a = 75 c

c = 50/75 a

c = 0.667 a

611 . 50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers?

A. 20
B. 10
C. 15
D. 25

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Answer: Option B

Explanation:

Total = Ittefaq + Prothom Alo - Both + None

= > 100% = 50% + 60% - 20% + None.

So, None = 10%

612 . 50 girls and 100 boys were invited to a party. If 30% of the girls and 75% of the boys attend the party, what percentage of guests attended?

A. 55
B. 60
C. 65
D. 75

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Answer: Option B

Explanation:

613 . 50 men took a dip in a water tank 40m long and 20m broad on a religious day. If the average displacement of water by a man is 4 m3 , then the rise in the water level in the tank will be --

A. 25 cm
B. 30 cm
C. 35 cm
D. 50 cm
E. None of these

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Answer: Option A

Explanation:

Total volume of water displacement = 4×50 = 200m³

Rise of water level = 200/(40×20) m = . 25m = 25 cm

614 . 54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is :

A. 24
B. 34
C. 30
D. 32

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Answer: Option B

Explanation:

x + y = 54

Or, x = (54 - y)

2n condition :

10x + 22y = 780

5x + 11y = 390

5 ( 54 - y) + 11y = 390

270 - 5y + 11y = 390

6y = 120

y = 20

x = ( 54 - 20) = 34

615 . 5×4−6÷3+1=?

A. 5
B. 4
C. -1
D. None of these

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Answer: Option D

Explanation:

601 . 4% of which number is 20?

602 . 4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days. In how many will 10 women complete it?

603 . 40% of 200 is what percent of 160?

604 . 40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390. The annual income of each executive is $420. What is the average annual income of all the employees in the factory together?

605 . 48.95-32 .006 =?

606 . 4x4 +25x2 +36=?

607 . 5% of which number is 25?

608 . 5.125/2.223 =?

609 . 5 years ago the ratio of father's age to son's age was 5 : 1 and 2 years later father's age will be 3 times his son's age. What is the ratio of their present age?

610 . 50% of a% of b is 75% of b% of C. Which of the following is C ?

611 . 50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers?

612 . 50 girls and 100 boys were invited to a party. If 30% of the girls and 75% of the boys attend the party, what percentage of guests attended?

613 . 50 men took a dip in a water tank 40m long and 20m broad on a religious day. If the average displacement of water by a man is 4 m3 , then the rise in the water level in the tank will be --

614 . 54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is :

615 . 5×4−6÷3+1=?

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