A Jeep is 30 km ahead of a car travelling in same direction. After 3 hours, the car is 60 km ahead of bus. If the speed of bus is 42 km/h. Find the speed of the car?
Answer & explanation
Correct answer: option 1
Speed of car = S km/hr
Relative distance = 90 km
Relative speed (in same direction) = S - 42
Distance = speed × time
90 = (S - 42) × 3
⇒ S = 72 km/h