A boy walks to his school at a distance of `6 km ` with constant speed of ` 2.5 km h^(-1)` and walks back with a constant speed of ` 4 km h^(-1)`. What is avetage speed for the round trip in `km h^(-1)` ?A. `24//13`B. `40//13`C. 3D. `1//2`

A boy walks to his school at a distance of `6 km ` with constant speed

1.	A boy walks to his school at a distance of `6 km ` with constant speed of ` 2.5 km h^(-1)` and walks back with a constant speed of ` 4 km h^(-1)`. What is avetage speed for the round trip in `km h^(-1)` ?A. `24//13`B. `40//13`C. 3D. `1//2`
Answer» Correct Answer - B

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A boy walks to his school at a distance of `6 km ` with constant speed of ` 2.5 km h^(-1)` and walks back with a constant speed of ` 4 km h^(-1)`. What is avetage speed for the round trip in `km h^(-1)` ?A. `24//13`B. `40//13`C. 3D. `1//2`

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