391 . Two-fifth of one-third of three-seventh of a number is 15. What is 40 percent of that number?

A. 72
B. 84
C. 136
D. None of these

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Answer: Option D

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

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392 . Two-fifth of one-fourth of three-seventh of a number is 15. When is half of that number?

A. 94
B. 96
C. 188
D. None of these

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Answer: Option D

Explanation:

Let, the number be x

2/5 of 1/4 of 3/7 of x = 15

2/5×1/4×3/7× = 15

6x/140 = 15

6x = 15×140

6x = 2100

x = 350

Half of x is 175

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393 . Two equal glasses are respectively 1/3 and 1/4 full of milk, They are then filled up with water and the coutents mixed in a tumbler .What is the ratio of milk and water in the tumbler?

A. 7 ; 14
B. 7 ; 17
C. 7 : 15
D. 7 : 13
E. 7 ; 2

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Answer: Option B

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394 . Two different schools, A and B, have the same number of students. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. What is the ratio of the boys in school A to the girls in school A?

A. 1:2
B. 2:3
C. 3:4
D. 4:5
E. None of these

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Answer: Option A

Explanation:

school A has a boys and b girls, and school B has c boys and d girls, then

a/c = 2/1
b/d = 4/5
a+b = c+d

we want to find a/b

a = 2c
5b = 4d

a-c = d-b
a-(a/2) = (5b/4)-b
a/2 = b/4
a/b = 2/4 = 1/2

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395 . Two coins are tossed. What is the probability of getting at most one head

A. $\frac{1}{2}$
B. $\frac{1}{4}$
C. $\frac{1}{6}$
D. $\frac{3}{4}$

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Answer: Option D

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

A. None
B. loss of Tk. 120
C. loss of tk. 300
D. Profit of Tk. 120

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Answer: Option C

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397 . Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart , is :

A. 3/20
B. 13/102
C. 29/34
D. 47/100

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Answer: Option B

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398 . Two buses start from a bus terminal with a speed of 20 km/h at interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at interval of 8 minutes?

A. 3 km/h
B. 4 km/h
C. 5 km/h
D. 7 km/h

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Answer: Option C

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প্রবাসী কল্যাণ ব্যাংক-সিনিয়র অফিসার-09-10-2021

A. Tk 4, Tk 23
B. Tk 13, Tk 17
C. Tk 15, Tk 14
D. Tk 17, Tk 13
E. None of these

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Answer: Option B

Explanation:

"Let, fare for B from A =  x
Fare for C from A  =  y 
2x   +   3y  =  77
3x   +   2y  =  73 
x  =  13, y  =  17"

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400 . Two blends of tea costing $2.80 and $3.20 per kg respectively, are mixed in the proportion 2 : 3. The mixture is sold at $4.80 per kg. What was the percentage of profit?

A. 57.9
B. 60
C. 50.7
D. 50.9

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Answer: Option A

Explanation:

Let the amount of tea blends be 2T and 3T respectively.

Then total cost = 2T x $2.8 + 3T x $3.2 = $15.2T

Total sell = (3T + 2T) x $4.8 = $24T

So, profit = (24T - 15.2T) / 15.2T x 100% = 57.9%

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401 . Two baskets together have 640 oranges if one-fifth of the oranges in the first basket be taken to the second basket then, number of oranges in both baskets become equal. The number of oranges in the first basket is

A. 800
B. 600
C. 400
D. 300

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Answer: Option C

Explanation:

Let x be the number of oranges in the first basket.

The number of oranges in the second basket is 640 - x, as together they have 640 oranges.

Now, it is given that one-fifth (1/5) of the oranges in the first basket are taken to the second basket. This means (1/5)x oranges are moved to the second basket.

After this transfer, the number of oranges in the first basket becomes x - (1/5)x = (4/5)x.

The number of oranges in the second basket becomes 640 - x + (1/5)x = 640 - (4/5)x.

Now, according to the problem, when the number of oranges in both baskets becomes equal, we can set up an equation:

(4/5)x = 640 - (4/5)x

To solve for x, first, let's get rid of the fractions by multiplying both sides of the equation by 5:

4x = 3200 - 4x

Now, add 4x to both sides of the equation:

4x + 4x = 3200

8x = 3200

Next, divide both sides by 8 to solve for x:

x = 3200 / 8

x = 400

So, there were 400 oranges in the first basket.

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

A. AB=BC
B. CA =CB
C. AB =AC
D. AC

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Answer: Option B

Explanation:

Let's calculate the lengths of the sides of triangle ABC using the distance formula to determine which of the given options is true:

Distance Formula: The distance between two points (x1, y1) and (x2, y2) is given by √((x2 - x1)^2 + (y2 - y1)^2).

A (1, 0) and B (5, 0): AB = √((5 - 1)^2 + (0 - 0)^2) = √(4^2 + 0) = 4.

B (5, 0) and C (3, 4): BC = √((3 - 5)^2 + (4 - 0)^2) = √((-2)^2 + 4^2) = √(4 + 16) = √20.

A (1, 0) and C (3, 4): AC = √((3 - 1)^2 + (4 - 0)^2) = √(2^2 + 4^2) = √(4 + 16) = √20.

Now, let's compare the lengths:

AB = 4 BC = √20 AC = √20

From the calculations, it's clear that AC = BC, so the correct statement is:

CA = CB

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Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

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

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Answer: Option D

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404 . Train X covers a distance of 150 km in 2 hours. Train Y covers a distance of 135 km in 3 hours. What is the ratio of speed of train X to train Y?

A. 3 : 2
B. 5 : 3
C. 7 : 4
D. 9 : 5

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Answer: Option B

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405 . train passes a platform in 40 sec and a woman standing on the train is 108 km/hr. what is the length of the platform in 25 seconds. The speed of the train is:

A. 22
B. 36
C. 30
D. 26

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Answer: Option D

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Two Combined Bank Recruitment Test - Officer 28.09.2018 ||

391 . Two-fifth of one-third of three-seventh of a number is 15. What is 40 percent of that number?

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392 . Two-fifth of one-fourth of three-seventh of a number is 15. When is half of that number?

393 . Two equal glasses are respectively 1/3 and 1/4 full of milk, They are then filled up with water and the coutents mixed in a tumbler .What is the ratio of milk and water in the tumbler?

394 . Two different schools, A and B, have the same number of students. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. What is the ratio of the boys in school A to the girls in school A?

396 . Two chairs have been sold ,each for Tk. 3,600. On one 20% profit has been earned and on the other 20% loss has been incurred .What is total profit or loss ?

397 . Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart , is :

398 . Two buses start from a bus terminal with a speed of 20 km/h at interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at interval of 8 minutes?

399 . Two bus tickets from cit A to B and three tickets from city A to C cost Tk 77 but three tickets from city A to B and two tickets from city A to C cost Tk 73. What are the fares for cities B and C from city A?

400 . Two blends of tea costing $2.80 and $3.20 per kg respectively, are mixed in the proportion 2 : 3. The mixture is sold at $4.80 per kg. What was the percentage of profit?

401 . Two baskets together have 640 oranges if one-fifth of the oranges in the first basket be taken to the second basket then, number of oranges in both baskets become equal. The number of oranges in the first basket is

402 . Triangle ABC has the following vertices: A (1,0) , B (5,0) and C (3,4) . which of the following is true ?

403 . Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?

404 . Train X covers a distance of 150 km in 2 hours. Train Y covers a distance of 135 km in 3 hours. What is the ratio of speed of train X to train Y?

405 . train passes a platform in 40 sec and a woman standing on the train is 108 km/hr. what is the length of the platform in 25 seconds. The speed of the train is:

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