Step-by-step explanation:

answer is 275-15%

15% is 15/100*275

=15/20*55

=15/4*11

=165/4

Answer:

The price of the book-₹275

Loss-15%

Let the selling price be x then,

SP=CP+Loss

275+15by100 in fraction

LCM=100

2750-15 by 100 in fraction

2735 by 100 in fraction

= 547 by 10

₹54.7 cost price