Question

2. A boy sold his old book for * 64 at 20% loss. What was the cost price of
the book?
(A) 78.80 (B) * 80 (C) ₹ 100 (D) 120​

Answer 1

Answer:

Selling price is=64

Loss=20%

Cost price=?

We know that

Loss=Cost Price-Selling Price

Loss in %=[(Cost price-Selling price)/Cost price]*100%

20=[(CP-64)/CP]*100

20CP=100CP-6400;

640=8Cp

Cost price is Rs. 80

Step-by-step explanation: