Question

The selling price of a book is 7/5 times its cost price, find the gain percent.
Please answer ASAP ​

Answer 1

Answer:-

Gain%=40%

Step-by-step explanation:

Given:-

The selling price of a book is 7/5 times its cost price.

To find:-

find the gain percent.

Solution:-

Let the cost price of a book be X

The selling price of a book 8/5 times it's cost price

=>Selling Price=7/5×Costbprice

=>Selling Price =7X/5

Selling price >Cost price

Gain=Selling Price - Cost Price

=>Gain =7X/5-X

=>Gain=(7X-5X)/5

=>Gain=2X/5

Now ,Gain percentage =(Gain×100)/Cost price

=>G%=(2X/5)×100/X

=>G%=2×100/5

=>G%=2×20

=>G%=40%

Answer:-

Gain percentage =40%