Question

a dishonest milkman buys milk at Rs.20 per lotre and adds 1/3 of water to it and sells the mixture at Rs .24 per litre. what is his gain?​

Answer 1

let he bought x litre

=now he has X+X/3=4x/3

=total selling price=4x/3×23

=32x

=cost price=20x

=gain=32x-20x=12x

=gain %=12x×100/20x=60%gain