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A car travelling at an average speed of ...

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 ?

A

8

B

9

C

7

D

6

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A racing car going at an average speed of 108 km/hr takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (in km/hr) to complete the lap in 12 minutes ?

    A
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    B
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    B
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    B
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