Multiple choice

The cost price of 50 books is equal to the selling price of 40 books. The profit percent is

  1. 20%

  2. 22%

  3. 24%

  4. 25%

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let CP of 1 book = x and SP of 1 book = y. Given: 50x = 40y, so y = 1.25x. Profit = SP - CP = 1.25x - x = 0.25x. Profit% = (0.25x/x) × 100 = 25%. This is a classic profit and loss problem where the selling price of fewer items equals the cost price of more items.