if the price of a book is first decreased by 20% and then increased by 10%, then the net change in the price will be :	Choose the correct choice from the following answers.
A) 10	B) 12	C) 37	D) 29	E) 22

Rationale: explanation : let the original price be rs . 100 . decreased by 20 % = 80 then increased 10 % on rs 80 = 80 + 8 = 88 net change in price = 100 - 88 = 12 answer : b
Answer: B