In covering a distance of 18 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:  Choose the correct choice from the following answers:  A) 3 kmph  B) 6 kmph  C) 6.25 kmph  D) 7.5 kmph  E) 7.8 kmph

Rationale: let abhay ' s speed be x km / hr . then , 18 / x - 18 / 2 x = 3 6 x = 18 x = 3 km / hr . answer : option a
Answer: A