Question

The speed of a train is 20m/ sec.How much distance will it travel in 4 hours

Answer 1

Speed = 20m/ s

Distance travelled in 1 second = 20 m

=> Distance travelled in 1 minute = 20 * 60 m

=> Distance travelled in 1 hour = 20 * 60 * 60 m

=> Distance travelled in 4 hours = 20 * 60*60 *4 m

= 20 * 60 * 60 * 4 /1000 km

= 2*6*6*4

= 48 * 6

= 288 km

Answer 2

the speed of train - 20m/sec
so; the train will travel in 4 hours =
20×(3600×4)
= 20×14400
=288000m
=288km