Question

how long will an Express train travelling at 50 km per hour take a cover a distance of 5 km between two stations

Answer 1

distance = 5 km

speed = 50km/hr

$time = \frac{5}{50} \\ \frac{1}{10} \\ \\ 0.1 \: hr \\ \\ 360sec$

min = sec / 60
360/60
6 min