A thief goes away with a SANTRO car at a speed of 50 kmph. The theft has been discovered after half an hour and the owner sets off in a bike at 60 kmph when will the owner over take the thief from the start?  Choose the most appropriate option:
A) 2
B) 5
C) 7
D) 5
E) 8

Rationale: "explanation : | - - - - - - - - - - - 20 - - - - - - - - - - - - - - - - - - - - | 60 50 d = 20 rs = 60 – 50 = 10 t = 20 / 10 = 2 hours answer : option a"
Answer: A