Question

by selling 100 mango a fruit seller gain the S.P of a 20 mango the find gain percent

Answer 1

let selling price of one mango be Rs x

selling price of 100mangoes = rs 100x

AtQ

Gain=S.p of 20 mango
selling price of 20 mangoes=Rs 20x
gain=rs 20x
Cost price of mango=100x-20x=80x
gain%=20x/80x*100=25%