Question

A train is moving at a speed of 100 km/h. How much time will it take to cover a distance of 20 km ?​

Answer 1

speed = 100 km / hr

time = ?

distance = 20 km

speed = distance / time

100 = 20 / time

100 x 20 = time

2000 = time

Answer 2

Answer:

$Speed \: of \: the \: train = 100 km/ hr \\ </p><p>Distance \: travelled \: = 20 km \\ </p><p>Time \: taken = \: \frac{Distance \: travelled}{Speed \: of \: the \: train } \\ = \frac{20}{100} \\ = \frac{1}{5} \: hour \\ = \frac{1 }{5} \times 60 \\ = 12 \: minutes$