Multiple choice

A man sold a watch for Rs. 60 and lost something. Had he sold it for Rs. 75, his gain would have been double the former loss. Find the cost price of the watch.

  1. Rs. 71

  2. Rs. 62

  3. Rs. 65

  4. Rs. 70
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let CP = x. Loss at Rs. 60 = x - 60. Gain at Rs. 75 = 75 - x. Given: Gain = 2 × Loss, so 75 - x = 2(x - 60). Solving: 75 - x = 2x - 120, so 3x = 195, x = 65. Check: CP = 65, Loss = 5, Gain = 10. Indeed 10 = 2 × 5.

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