Question

A train is moving at a uniform speed of 105
km/hour.
(1) how far will it travel in 20 minutes.
(2) Find the time required to cover a distance of 210km.

Answer 1

1)105/60=1.75    1.75*20=35km

2) 2 hours

Answer 2

Answer:

(i) The train will go 35km in 20 minutes.

(ii) 2 hrs will be required to cover a distance of 210 km

Step-by-step explanation:

Given:

Speed = 105 km/hr

(i) We need to find the distance it will cover in 20 minutes

Time = t = 20 mins = $\frac{20}{60}$ hr = $\frac{1}{3}$ hr

We know that Speed = $\frac{Distance}{Time}$

=> Distance = Speed * Time

                    = 105 *  $\frac{1}{3}$

                    = 35 km

Therefore, the train will go 35km in 20 minutes.

(ii) We need to find the time required to cover a distance of 210 km

=> Time =  $\frac{Distance}{Speed}$

              = $\frac{210}{105}$

              = 2 hr

Therefore, 2 hrs will be required to cover a distance of 210 km