Question

By selling a book for Rs. 144 a man loses 1/2 of his outlay.if it is sold for rs 189,them what is the gain percent?

Answer 1

Answer:

The gain percentage is 12.5%

Step-by-step explanation:

By selling a book for Rs. 144, a man loses 1/7 of his outlay. If it is sold for Rs. 189, then the gain is 12.5 %

Let the cost price of the book be Rs. X

The loss of outlay is Rs. X/7.

Given that:

Selling price of the book is Rs. 144

or, X - X/7 = 144

or, 6X/7 = 144

or, X = 144 x 7/6

or, X = 168

Thus the cost price of the book is 168  Rs

If the book is sold for Rs. 189,

Then the profit = Rs. (189 - 168) = Rs. 21

Therefore gain percentage is

= 21/168 x 100 %

= 100/8 %

= 12.5 %