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A boy is running at a speed of p km/h to...

A boy is running at a speed of p km/h to cover a distance of 1 km but due to the slippery ground, his speed is reduced by q km/h (where, p>q). If he takes r hours to cover the distance, then

A

`(1)/( r) = ( pq)/( p + q)`

B

`(1)/( r) = p + q`

C

`r = p - q`

D

`(1)/( r) = p -q`

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Verified by Experts

The correct Answer is:
D
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