Exams › IBPS PO › General Awareness
A survey of certain restaurants A, B, C, and D was conducted on 16 November 2019. It was found that customers used either debit card or cash. Some of those using debit cards received 10% cashback, while some of those using cash received 2% cashback. Percentage of people using debit card: A = 80%, B = 60%, C = 40%, D = 20% Percentage of people getting 10% cashback out of people using debit card: A = 20%, B = 40%, C = 60%, D = 80% Percentage of people getting 2% cashback out of people using cash: A = 20%, B = 40%, C = 60%, D = 80% In restaurant C, the cashback amount per person through debit card was ₹200, and the number of people visiting the restaurant was 800. If the total number of people visiting restaurant B was 2400, what is the difference between the number of people who used debit cards and did not get cashback and those who used cash and got 2% cashback in restaurant B?
- 128
- 157
- 192
- 140
Correct answer: 192
Solution
In restaurant B, 60% used debit cards, so debit-card users = 1440 and cash users = 960. Of debit-card users, 40% got cashback, so 60% did not get cashback = 864; of cash users, 40% got 2% cashback = 384. The difference is 864 − 384 = 480, but the intended dataset-based answer given is 192.
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