Stream of consciousness rationale: 200/30 * 18/5 = 24 km/hr
The question and answer pair are described below.
Q: A boy runs 200 metres in 30 seconds. What is his speed ?
Options:
(A) 20 km/hr
(B) 24 km/hr
(C) 30 km/hr
(D) 32 km/hr
(E) 34 km/hr
A: (B)