In a covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay double his speed, then he would take 1 hour less than Sammer. Abhay's speed is?
Choose the correct choice from the following answers:
A) 5 km/hr  B) 1 km/hr  C) 6 km/hr  D) 3 km/hr  E) 7 km/hr
A   5 km/hr   Let Abhay's speed be x km//hr.   Then, 30/x - 30/2x = 3   x = 5 km/hr.
<result>A</result>
In a covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay double his speed, then he would take 1 hour less than Sammer. Abhay's speed is?