Question

by selling a book for 258 a book seller gains 20% fins cost price of the book​

Answer 1

Answer:

Given details are,

Selling price of book is = Rs 258

The man’s gain percent is = 20% of 100 = 20/100

So, let us consider the cost price of book be Rs x

By solving,

x + x×20/100 = 258 x + x/5 = 258 (5x+x)/5 = 258

By cross multiplying

6x= 5×258 x = 1290/6 = 215

Now, the cost price of book is = Rs 215

For a gain of 30%

the man should sell the book at

= 215 + 215×30/100 = 215 + 64.5 = 279.50

∴ To gain 30% the man should sell the book at Rs 279.50.

Step-by-step explanation: