A fruit seller had some mangoes.He sells 30% mangoes and still has 280 mangoes.Find the number of mangoes he had?

A) 400 mangoes

B) 588 mangoes

C) 600 mangoes

D) 388 mangoes

Let original mangoes= X
Then, (100 – 30)% of X = 280
70/100 * X = 280
X = (280 * 100) / 70 = 400