Car A runs at the speed of 50km/hr & reaches its destination in 6hr. Car B runs at the speed of 100 km/h & reaches its destination in 1h. What is the respective ratio of distances covered by Car A & Car B?	Choose the most appropriate option
A) 11 : 5 B) 3 : 1 C) 13 : 7 D) 15 : 7 E) 16 : 9

Rationale: "sol . distance travelled by car a = 50 × 6 = 300 km distance travelled by car b = 100 × 1 = 100 km ratio = 300 / 100 = 3 : 1 answer : b"
Answer: B