Question

Walking at the rate of 4 km/h a man cover certain distance in 2 hr 45 min. In how
much time the man will cover the same distance while running at a speed of 16.5
km/h?
Pls explain

Answer 1

Answer:

39.9 minutes

Explanation:

Speed of man = 4 km/hr

Time = 2 hr 45 min = 2.75 hr

Hence, distance covered by man = Speed * Time = (4 * 2.75) km = 11 km

Speed while running = 16.5 km/hr

Distance covered = 11 km

Hence, time taken = Distance / speed = 11 / 16.5 = 0.66 hr = 39.9 minutes

Answer 2

Explanation:

Speed =4 km/h

Time = 2hr +45/60 h

= 2 hr + 3/4

=2+.75

=2.75 h

Distance covered = speed × Time

= 4×2.75

= 11 km

Now time taken to cover this distance at the speed of 16.5km/h

Time =distance /speed

= 11/16.5

Time =0.6 h