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 option:
A) 5 km / hr	B) 1 km / hr	C) 6 km / hr	D) 3 km / hr	E) 7 km / hr

Rationale: a 5 km / hr let abhay ' s speed be x km / / hr . then , 30 / x - 30 / 2 x = 3 x = 5 km / hr .
Answer: A