SSC CGL 8 Aug 2017 Shift 1 Paper

Question : 59 of 100

Marks: +1, -0

A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km /hr) of the train?

67
134.4
145.9
160

Validate

Solution:

Let speed of car = x km /h
The speed of train

=x× 140/100={7x}/5

km /h
According to question,

140/x={140× 5}/{7x}+25/60

⇒

140/x-700/{7x}=25/60

⇒

{140-100}/x=5/12

⇒

40/x=5/12

∴

x={40× 12}/5=96

Hence, speed of train

=96× 7/5=134.4

km /h

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