Multiple choice

If the cost price of 20 computers is equal to the selling price of 15 computers, then what is the gain percentage?

  1. 33.33%

  2. 20%

  3. 25.23%

  4. 27.31%

  5. 27.34%
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A Correct answer
Explanation

20 * CP = 15 * SP. SP = (20/15) * CP = (4/3) * CP. Gain = SP - CP = (1/3) * CP. Gain % = (1/3) * 100 = 33.33%.

AI explanation

Given that the cost price of 20 computers equals the selling price of 15 computers, we write 20C = 15S, meaning S = (4/3)C. The gain is S - C = (4/3)C - C = (1/3)C. Using the profit percentage formula, Profit % = (Profit / Cost) x 100, we get ((1/3)C / C) x 100 = 33.33%. The gain percentage is 33.33%.

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