Question

The cost price of 12 books is equal to the selling price of 8 books. Find the gain percent

Answer 1

Answer:

cp-?

sp-8 12*8 upon 100

Answer 2

let Cp of 12 book is x

then cp of 1 book is x/12

Sp of 8 book is x

then sp of 1 book is x/8

Gain =x/8- x/12

Gain=3x-2x/24

Gain =x/24

Gain %=x/24 ×12/x ×100

Gain%=50%