The cost price of 100 mangoes is equal to the selling price of 80 mangoes. What is the profit percentage?

Explanation

Given 100 \times \text{CP} = 80 \times \text{SP}, so \frac{\text{SP}}{\text{CP}} = \frac{100}{80} = \frac{5}{4}. Profit is 5 - 4 = 1 on a CP of 4. Profit percentage = \frac{1}{4} \times 100 = 25\%.

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