Question

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

Answer 1

number of time a train will take to cover 50km = one hr = 60min
number of time a train will take to cover 5 km. = 5*60/50
= 6min

therefore the train take 6mins to cover 5km.

Answer 2

50 km per hour

⇒ 1 hour = 50 km

Find 1 km:

50 km = 1 hour

1 km = 1 ÷ 50 = 1/50 hour

Find 5 km:

5 km = 1/50 x 5 = 1/10 = 0.1 hour

Convert hour to minutes:

0.1 hour = 0.1 x 60 = 6 mins

Answer: It takes 6 mins to travel from one station to the other one.