Question

A man bought a certain number of oranges, out of which 13 percent were found rotten. He gave 75 percent of the remaining in charity and still has 522 oranges left. Find how many had he bought?

Answer 1

Let no.of oranges bought=100

then percentage of oranges rotten=13%

then remaining oranges=100-13% of 100 i.e.=87

percentage given to charity out of left oranges=75% of 87 i.e.=21.75

by unitary method 100 - 21.75

then if 522 are left then no.of oranges bought=522*100/21.75 =2400

Ans=2400