In how many minutes will Rohit cover a distance of 800 m, if he runs at speed of 10 km/hr?

5 min 12 sec
4 min 40 sec
5 min
4 min 48 sec

Correct Answer: 4 min 48 sec

Explanation:

Rohit's speed = 10 Km/hr = (10 x 5/18) m/sec = 50/18 m/sec
Time taken to cover 800 m = (800 / (50/18) ) sec
= (800 x 18/50) sec = 288 sec = 4 min 48 sec

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