A person crosses a 600 m long street in 5 minutes. what is his speed in km per hour ? - IQ786

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A person crosses a 600 m long street in 5 minutes. what is his speed in km per hour ?

A person crosses a 600 m long street in 5 minutes. what is his speed in km per hour ?

7.2Km/hr

9.2Km/hr

10.2Km/hr

None

Explanation

Distance=600m
Time=5 min=5\times 60 sec
$S p e e d = \frac{D i s t a n c e}{t i m e s}$
$\Rightarrow \frac{6 0 0}{5 \times 6 0} m / s e c$
$\Rightarrow 2 m sec \Rightarrow 2 \times \frac{1 8}{5} = 7.2 K m / h r$