A boy runs 20 km in 2.5 hours. How long will he take to run 32 km at double the previous speed?

A boy runs 20 km in 2.5 hours. How long will he take to run 32 km at double the previous speed?
[A]5 hours
[B]$latex 4\frac{1}{2}&s=1$
[C]2 hours
[D]$latex 2\frac{1}{2}&s=1$

2 hours
The boy covers 20 km in 2.5 hours.
$latex => speed = \frac{20}{2.5} = 8 km/hr.&s=1$
New speed = 16 km/hr
∴ Time $latex = \frac{32}{16} = 2 hours.&s=1$
Hence option [C] is the right answer.


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