Question

1.)A train is moving at a uniform speed of 75 km/hour.
(i) How far will it travel in 20 minutes?
(ii) Find the time required to cover a distance of 250 km.​

Answer 1

Answer:

We have to find the distance covered in 20 minute. Distance covered by the train in 20 minute =75km60×20=25km. Hence, the train will cover 15km in 20 minutes. As the uniform speed of the train is 75km/hour.

Answer 2

The whole sum is in the S.I. Unit:

Speed= 75km/hr

$= \frac{75×1000}{60×60}$

$= \frac{125}{6}$

1) Time= 20 mins= 20×60 secs= 1200secs

Distance = Speed×Time

D= $\frac{125}{6}$

2) Distance= 250km = (250×1000) metre,

$Speed=\frac{125}{6}$

$Time=\frac{Distance}{Speed}$

T= 12000 secs

3.33 hour