A thief steals at a car at 2.30 p.m. and drives it at 50 km/hr. The theft is discovered at 3 p.m. and the owner sets off in another car at 75 km/hr. When will he overtake the thief?  Choose one:
A) 6 p.m
B) 9 p.m
C) 4 p.m
D) 2 p.m
E) 1 p.m
:   Suppose the thief is overtaken x hrs after 2.30 p.m.   Then, distance covered by the owner in (x - 1/2) hrs.   50x = 75(x - 1/2) =&gt; x =3/2 hrs.   So, the thief is overtaken at 4 p.m.'   Answer: 4 p.m
<result>C</result>
A thief steals at a car at 2.30 p.m. and drives it at 50 km/hr. The theft is discovered at 3 p.m. and the owner sets off in another car at 75 km/hr. When will he overtake the thief?