Multiple choice general knowledge math & puzzles

X buys an apple from Y for Rs.5 and sells it to Z for Rs.10. He later buys the apple back from Z for Rs.12 and sells it to Y for Rs.15. What is his profit over the venture?

  1. 8

  2. 6

  3. 12

  4. 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Track net cash flow from X's perspective. First transaction: buys at Rs. 5, sells at Rs. 10 → profit Rs. 5. Second transaction: buys at Rs. 12, sells at Rs. 15 → profit Rs. 3. Total profit = 5 + 3 = 8. The key is to treat each buy-sell as an independent cycle.

AI explanation

To solve this question, let's analyze the transactions step by step:

  1. X buys an apple from Y for Rs.5. X's initial cost is Rs.5.
  2. X sells the apple to Z for Rs.10. X's profit from this transaction is Rs.10 - Rs.5 = Rs.5.
  3. X buys the apple back from Z for Rs.12. X's total cost is now Rs.5 + Rs.12 = Rs.17.
  4. X sells the apple to Y for Rs.15. X's profit from this transaction is Rs.15 - Rs.17 = -Rs.2.

So, overall, X has a loss of Rs.2 over the venture.

Therefore, the correct answer is not given among the options. None of the options A, B, C, or D is correct.

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