a child bought his old book in 20% loss and sold in Rs 64 What is the cost price - Maths - Rational Numbers

Question

a child bought his old book in 20% loss and sold in Rs 64 What is
the cost price of the book

Rishabh Mittal · Accepted Answer

Let the cost price of book be x
Loss=C P-S P=Rs  x-64We knowLoss Percent=LossC
P×10020=x-64x×10020x=100x-6400-80x=-6400x=640080=80Cost Price of the book is Rs
 80

a child bought his old book in 20% loss and sold in Rs.64. What is the cost price of the book