A car travelling at an average speed of 72 km/hr takes 9 min

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SSC CGL Tier-2 19-February-2018 Maths
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MATH

93

M: +3.00/-0.00

A car travelling at an average speed of 72 km/hr takes 9 minutes to travel a certain distance. By how much should it increase its speed (in km/hr) to travel the same distance in 8 minutes?

[SSC CGL Tier-2 19-February-2018 Maths]

A 8

B 9

C 7

D 6