Question

A fruit vendor stored 420 watermelons. Out of these, 10% turned rotten due to heat. How many watermelons could the fruit vendor sell?

Answer 1

Total water lemons = 420
Number of water lemons rotten = $420\times 10\%=420\times \frac{10}{100}=42$
Therefore number of water lemons he could sell = 420-42=378