Question

a train is moving at a uniform speed of 84 km/hour. how far will it travel in 15minutes? Find the time required to a cover a distance of 210km?
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Answer 1

Answer:

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Step-by-step explanation:

Speed of train in 60 minutes = 120 km

i.e. distance covered in 60 minutes = 120/60

Distance covered in 36 minutes = (120 × 36)/60

= 2 × 36 = 73 km

(ii) If distance covered is 120 km then time taken = 60 minutes

If distance covered is 1 km then time taken = 60/120

If distance covered is 210 km then time taken = (60/120) × 210 = 105 minutes

= 1 hour 45 minutes

Answer 2

Given:

A train is moving at a uniform speed of 84 km/hour.

To Find:

i) How far will it travel in 15minutes.

ii) Time required to a cover a distance of 210km.

Solution:

i)

ATQ

Speed of train = 84 km/hour

Distance covered by train in 60 minutes = 84/60

Distance covered in 15minutes = (84 × 15)/60 = 21 km

ii)

ATQ

Time taken to cover 84km = 60 minutes

Time taken to cover 1km = 60/84

Time taken to cover 210km = (60/84) × 210 = 150 minutes

= 2hours 30minutes

Hence, Distance covered in 15minutes is 21km and Time taken to cover 210km is 2hour 30minutes.