Question
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?
Answer: Option D
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Answer : Option D
Explanation :
distance = 600 meter
time = 5 minutes = 5 x 60 seconds = 300 seconds
$MF#%\begin{align}&\text{Speed = }\dfrac{\text{distance}}{\text{time}} = \dfrac{600}{300} = 2\text{m/s}\\\\
&= 2 \times \dfrac{18}{5}\text{ km/hr} = \dfrac{36}{5}\text{ km/hr}= 7.2\text{ km/hr}\end{align} $MF#%
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