In covering a distance of 30 km Abhay takes 2 hours...

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In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's speed is :

A. 5 km/hr

B. 6 km/hr

C. 6.25 km/hr

D. 7.5 km/hr

Answer: Option A

Solution (By Examveda Team)

Let Abhay's speed be x km/hr
Then,
$$\eqalign{ & \Rightarrow \frac{{30}}{x} - \frac{{30}}{{2x}} = 3 \cr & \Rightarrow 6x = 30 \cr & \Rightarrow x = 5{\text{ km/hr}} \cr} $$

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