Question

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

• A. 3.6
• B. 7.2
• C. 8.4
• D. 10

Answer 1

The correct option is B 7.2

Distance=600m

Time=5 min=5\times 60 sec

$Speed=\frac{Distance}{times}$

$\Rightarrow \frac{600}{5\times 60}m/sec$

$\Rightarrow 2m\sec \Rightarrow 2\times \frac{18}{5}=7.2Km/hr$