Time and Distance - General Aptitude

Q1:

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 kmph

B 6 kmph

C 6.25 kmph

D 7.5 kmph

ANS:A - 5 kmph

Let Abhay's speed be x km/hr.

Then, 30 - 30 = 3
x 2x
 6x = 30  x = 5 km/hr.