Multiple choice

A boy gains 40% by selling his watch at a certain price. If he sells it at double the price, what will be his profit percentage?

  1. 80%

  2. 130%

  3. 30%

  4. 180%

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cost price = 100. Selling price = 140. Double the price = 280. Profit = 280 - 100 = 180. Profit percentage = 180%.

AI explanation

Let the cost price be 100 units, meaning the initial selling price to gain 40 percent is 140 units. When the watch is sold at double the price, the new selling price becomes 280 units. The profit is 280 - 100 = 180 units, so the profit percentage is (180 / 100) * 100 = 180 percent.

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