Car A runs at the speed of 42km/hr & reaches its destination in 6hr. Car B runs at the speed of 52 km/h & reaches its destination in 9h. What is the respective ratio of distances covered by Car A & Car B? Pick
A) 11 : 6	B) 7 : 13	C) 13 : 7	D) 15 : 6	E) 13 : 6

Rationale: "sol . distance travelled by car a = 42 × 6 = 252 km distance travelled by car b = 52 × 9 = 468 km ratio = 252 / 468 = 7 : 13 b"
Answer: B