2581 . In what proportion should coffee costing Tk. 12.5 Tk. Per gram be blended with coffee costing Tk. 14 per gram that the final blend costs Tk. 13 per gram?

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

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Answer: Option B

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2582 . In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg ?

A. 3:7
B. 5:7
C. 7:3
D. 7:5

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Answer: Option C

Explanation:

Let the amount of pulse of price Tk. 15 = x
and the amount of pulse of price Tk. 20 = y
Then the total amount of mixture = ( x + y) kg
total cost of mixture = 15x + 20y
but the price per kg of the mixture = Tk. 16.50
so, total price of (x + y) kg = 16.50(x + y)
According to question;
16.50(x + y) = 15x + 20 y
or, 16.50x + 16.50y = 15x + 20y
or, 1.50x = 3.50y
or, x/y = 3.50/1.50 = 0.7/0.3 = 7/3
so, the required ratio is 7 : 3

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2583 . In what ratio must a grocer mix two varieties of tea worth TK. 60 a kg and TK. 65 a kg so that by selling the mixture at TK. 68.20 a kg he may gain 10% ?

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

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Answer: Option A

Explanation:

Hints : Let he mixes the tea in ratio x:y

Therefore the cist price = 60x + 65y

selling price = 68.20(x + y)

we know,

profit = sells price - cost price

10% of (60x + 65y) = 68.20(x + y) - (60x + 65y)

10(60x + 65y) / 100 = 68.20x + 68.20y - 60x - 65y

6x + 6.5y = 820x + 3.20 y

2.2x = 3.3 y

x/y = 3/2

x:y = 3:2

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2584 . In what ratio must a grocer mix two varieties of tea Worth Tk. 60 per kg and Tk. 65 per kg so that by selling the mixture at Tk. 68.20 per kg he may gain 10% ?

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

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Answer: Option A

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Probationary Officer | 31.03.2017 ||

A. 3 : 1
B. 3 : 2
C. 4 : 3
D. 3 : 5

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Answer: Option A

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2586 . In which one of the following choices, p must be greater than q?

A. $0 . 9^{p} = 0 . 9^{q}$
B. $0 . 9^{p} = 0 . 9^{2 q}$
C. $9^{p} < 9^{q}$
D. $9^{p} > 9^{q}$

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Answer: Option D

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সমন্বিত ৬ ব্যাংক ও আর্থিক প্রতিষ্ঠান - সহকারী প্রোগ্রামার - 18.03.2021

A. 3 hours
B. 1 hour
C. 2 hours
D. 30 minutes

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Answer: Option B

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2588 . Income of A is 25% less than B. How much percent B's income would be more than that of A?

A. 33.5%
B. 30%
C. 35%
D. 40%

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Answer: Option A

Explanation:

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2589 . Income of A is 25% less than B. What percent B's income would be more than A?

A. 35%
B. 33.33%
C. 30%
D. 25%

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Answer: Option B

Explanation:

increase/decrease100±Increae/decrease=25100−25=2575=13=33⋅33 or 3313% [Increase=(+) and decrease=(−) will be used].

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বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023)

A. 8
B. 10
C. 12
D. 15

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Answer: Option C

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2591 . Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by--

A. 32.25%
B. 31.00%
C. 30.25%
D. 30.00

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Answer: Option A

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2592 . Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by ---

A. 32.25%
B. 31.00%
C. 30.25%
D. 30.00%

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Answer: Option A

Explanation:

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2593 . Increasing the original price of an item by 10% , then decreasing by 20% and then again increasing the price by 10% is equivalent.

A. 4.4% increase
B. 3.2%decrease
C. 3.5% decrease
D. None of these

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Answer: Option B

Explanation:

±a±b+(ab)/100

=10-20-(10×20)/100

=-12%

Again,

±a±b+(ab)/100

=-12+10-(12×10)/100

=-3.2% [- means decrease]

(ans).

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

A. 32.25%
B. 31.00%
C. 30.25%
D. 35.54%
E. None of these

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Answer: Option A

Explanation:

Let the original price be P.

Now, the new price after increasing the original price by 15% = 1.15P

The final price after increasing the new price by another 15% = 1.15x1.15P = 1.3225P.

So, actual increament in the original price = {1.322P - P) / P} x 100 = 32.25%

[Shortcut: + 15 + 15 + (15x15)/100 = 32.25%]

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2595 . Increasing the original price of an item by 20% and then decreasing the price by 20% is equivalent to which of the following?

A. 4% decrease
B. 5% increase
C. Original price
D. 5% decrease
E. None of these

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Answer: Option A

Explanation:

let the number is 100

increase 20% = 100 + 20 = 120

decrease of 20% on 120 = (20/100)×120 = 24

nett amount 120–24 = 96

So decrease 100–96 = 4

decrease of 4 out of 100

percentage of decrease 4%

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2581 . In what proportion should coffee costing Tk. 12.5 Tk. Per gram be blended with coffee costing Tk. 14 per gram that the final blend costs Tk. 13 per gram?

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2582 . In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg ?

2583 . In what ratio must a grocer mix two varieties of tea worth TK. 60 a kg and TK. 65 a kg so that by selling the mixture at TK. 68.20 a kg he may gain 10% ?

2584 . In what ratio must a grocer mix two varieties of tea Worth Tk. 60 per kg and Tk. 65 per kg so that by selling the mixture at Tk. 68.20 per kg he may gain 10% ?

2585 . In what ratio must tea at Tk. 62 per kg be mixed with tea at Tk. 72 per kg so that the mixture must be worth Tk. 64.50 per kg?

2587 . In your bookshelf, you have five favorite books. If you decide to arrange these five books in every possible combination and moved just one book in every half a minute How much time it will take you to arrange?

2588 . Income of A is 25% less than B. How much percent B's income would be more than that of A?

2589 . Income of A is 25% less than B. What percent B's income would be more than A?

2590 . Income tax is raised from tk. 4 to tk. 5 but the revenue is increased by 10% only. Find the decreased percentage in the amount taxed.

2591 . Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by--

2592 . Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by ---

2593 . Increasing the original price of an item by 10% , then decreasing by 20% and then again increasing the price by 10% is equivalent.

2594 . Increasing the original price of an item by 15 percent and then increasing the new price by another 15 percent is equivalent to increasing the original price by

2595 . Increasing the original price of an item by 20% and then decreasing the price by 20% is equivalent to which of the following?

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