A, B, C hired a car for Rs. 720 and used it for 9, 10 and 13 hours respectively. Hire charges paid by B are:  Choose the most appropriate option:	A) rs 220	B) rs . 225	C) rs . 230	D) rs . 235	E) rs . 255

Rationale: "a : b : c = 9 : 10 : 13 . hire charges paid by b = rs . 720 * 10 / 32 = rs . 225 . answer : b"
Answer: B