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A motorcyclist left 6(6)/(9) minutes lat...

A motorcyclist left `6(6)/(9)` minutes later than the scheduled time but in order to reach its destination 21km. Away in time, he had to increase his speed by 12km/hr from the usual speed. What is the usual speed (in kmph) of the motorcyclist?

A

28

B

35

C

42

D

64

Text Solution

Verified by Experts

The correct Answer is:
C
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