The speed of a boat in still water in 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is:

A. 1.2 km

B. 1.8 km

C. 2.4 km

D. 3.6 km

E. None of these

Answer: Option D

Solution(By Examveda Team)

Speed downstream
= (15 + 3) kmph
= 18 kmph
Distance travelled
= $$\left( {18 \times \frac{{12}}{{60}}} \right)$$   km
= 3.6 km