Walking at a speed of 5 km per hour, a man covers a certain distance in 3 hours. If he covers the same distance once by car at a speed of 30 km per hour and once by cycle at a speed of 15 km per hour, what will be the time taken by him?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 30 minutes by car and 1 hour by cycle.
The distance is speed × time = 5 × 3 = 15 km.
By car at 30 km/h the time is 15/30 = 0.5 hour, that is 30 minutes; by cycle at 15 km/h it is 15/15 = 1 hour.