The price of a book is increased from $300 to $450. What is the % of increase in its price?	Choose the correct choice from the following answers:	A) 10 %	B) 20 %	C) 40 %	D) 50 %	E) 60 %

Rationale: "explanation : change in the price = rs 450 â € “ rs 300 = rs 150 percentage of increase = change in the price initial price * 100 . percentage increase in price = ( 150 300 ) * 100 = 50 % d"
Answer: D