Question

A book seller bought a book for Rs 15 and spent Rs 5 on its binding. He sold it for Rs 24. Find his gain perfect.

Answer 1

CP of a book = Rs. 15
Spent on this book = Rs. 5
Total cost price of this book = Rs. ( 15+ 5) = Rs. 20
SP of this book = Rs. 24
gain = SP - CP
= Rs. (24 - 20)
= Rs. 4
gain % = gain * 100 / CP
= 4* 100 / 20
=20%

Answer 2

Whole product cp before he sold=20 Sp=24 P%=4/20×100  =20%