20 m/s = 20 * 18/5 kmph
3 hours 45 minutes = 3 3/4 hours = 15/4 hours
Distance = speed * time = 20 * 18/5 * 15/4 km = 270 km.
If a man can cover 20 metres in one second, how many kilometres can he cover in 3 hours 45 minutes?
Options:
[A] 288
[B] 162
[C] 220
[D] 270
[E] 122