Q. 94.1( 42 Votes )

A train moves at a constant speed of 75 km/hr.

(i) How far will it travel in 20 minutes?

(ii) Find the time required to cover a distance of 250 km.

Answer :

Given: Speed of train = 75kmph

To Find: Distance Travelled in 20 minutes, Time required to cover 250km.


Formulation: Speed of the train is 75kmph, i.e, it requires 1 hour (60 minutes) for the train to cover 75km.


Formula:


(i) Substituting x1 = 60 y1 = 75 and x2 = 20 in the formula,



Gives y2 = 25 km


The train will move 25km in 20 minutes


(ii) Substituting x1 = 60 y1 = 75 and y2 = 250 in the formula,



Gives x2 = 200 minutes or 3 hours 20 minutes


The time required to cover a distance of 250km is 3 hours 20 minutes.


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