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A boy rides his bicycle 10 km at an aver...

A boy rides his bicycle 10 km at an average speed of 12 `"km"//"hr"` and again travels 12 km at an average speed of 10 `"km"//"hr"`. His average speed for the entire trip is approximately

A

10.4 `"km"//"hr"`

B

10.8 `"km"//"hr"`

C

11 `"km"//"hr"`

D

12.2 `"km"//"hr"`

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The correct Answer is:
B
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MAHENDRA-SPEED, TIME AND DISTANCE-EXERCISE
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