The speed of the boat in the still water is 15 kmph and the rate of the current is 3 kmph. The distance travelled downstream in 12 mins is:
a) 1.2 km
b) 1.8 km
c) 2.4 km
d) 3.6 km
Correct option: d) 3.6 km
Explanation:
Speed downstream = (15+3)kmph= 18 kmph distance travelled=18*12/60 =3.6 km
