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IBPS PO Mains 5 Nov 2023 Paper

Question Numbers: 121-125

A survey of certain restaurants was conducted in four restaurants A, B, C and D on 16th November 2019 was collected. It was found that while making a transaction customers used either Debit card or Cash. Out of those making transactions using debit cards some of them (in percentage) getting 10% cash back, while those making transactions using some of them (in percentage) getting 2% cashback.

Question : 123 of 155

Marks: +1, -0

On November 20, 210 people in restaurant A used debit cards and didn't get cashback. On 20th November, what is the difference between the number of people who visited restaurant A and the number of people who paid through cash and didn't get 2% cashback?

(Note: Consider the data for 20th Novembe

r = 16

th November)

Validate

Solution:

Concept:

Use the given information for restaurant A to express total visitors as

100a

, then calculate the required difference using the cashback condition.

Explanation:

For restaurant A, let total visitors be

100a

Debit card users

= 50\%

100a = 50a

Debit card users who got 10% cashback

= 50\%

50a = 25a

So debit card users who did not get cashback

= 50a - 25a = 25a

Given

25a = 210

, so

5a = 42

Cash users

= 100a - 50a = 50a

Cash users who got 2% cashback

= 30\%

50a = 15a

So cash users who did not get 2% cashback

= 50a - 15a = 35a

Required difference

= 100a - 35a = 65a

Since

5a = 42

, we get

65a = 13 \times 5a = 13 \times 42 = 546

Answer:

546

, i.e. option D.

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