Question : Walking at the speed of 5 km/hr, a man covers a certain distance in 3 hours. Running at a speed of 15 km/hr the man will cover the same distance in:
Option 1: 2 hours
Option 2: 1 hour
Option 3: 30 minutes
Option 4: 1 hour 30 minutes
Correct Answer: 1 hour
Solution :
Speed of walking = 5 km/hr
Time taken for walking = 3 hours
Distance = 5 × 3 = 15 km
Speed of running = 15 km/hr
Time taken for running = $\frac{15}{15}$ = 1 hour
Hence, the correct answer is 1 hour.
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