The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is
Options:  A) 1.2 km  B) 1.8 km  C) 2.4 km  D) 3.6 km  E) None
Solution   Speed downstreams	=(15 + 3)= 
<gadget id="calculator">(15 + 3)</gadget>
<output>18</output>
18 kmph.   Distance travelled	(18 x 12/60)km= 3.6km.   Answer 3.6 km
<result>D</result>
The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is