SSC CGL Tier II 1 Dec 2016 Paper 1

Question : 44 of 100

Marks: +1, -0

A car can finish a certain journey in 10 hours at the speed of 42 kmph. In order to cover the same distance in 7 hours, the speed of the car (km/h) must be increased by :

Validate

Solution:

(3) Distance covered by car = 42 × 10 = 420 km.
New time = 7 hours
∴ Required speed =

420/7

= 60 kmph.
∴ Required increase = (60 – 42) kmph = 18 kmph

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