A car goes 20 metres in a second Find its speed...

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A car goes 20 metres in a second. Find its speed in km/hr ?

A. 18 km/hr

B. 72 km/hr

C. 36 km/hr

D. 20 km/hr

Answer: Option B

Solution (By Examveda Team)

1 m/sec = $$\frac{18}{5}$$ km/hr
Car cover 20 metres in a second
∴ 20 m/sec = $$\frac{20 ×18}{5}$$ = 72 km/hr

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