If each side of a square is increased by 50%, the ratio of the area of the resulting square to the area of the given square is: Choose the correct option
A) 5 : 4	B) 9 : 4	C) 4 : 5	D) 4 : 9	E) 1 : 2

Rationale: let , each side = a . then , original area = a 2 . new side = 150 a / 100 = 3 a / 2 . new area = 9 a 2 / 4 . required ratio = 9 a 2 / 4 : a 2 = 9 : 4 answer : b
Answer: B