RRB Group D Model Paper 9 with solutions

Question : 57 of 100

Marks: +1, -0

A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/h, the time taken by it to cover the same distance is equal to

Solution:

(2) Speed of train =

{\distance}/{\time}=10/{12/60}

= 50 km / h
New speed = 50 – 5 = 45 km/h
New time taken
=

10/45=2/9

hr =

2/9×60=40/3

min

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