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

3.6 Km

Speed of boat in still water= 15 km/hr

Speed of stream/current = 3 km/hr

Downstream speed = 18 km/hr

According to the question:

18 = \(\frac{Distance }{12/60}\)

Distance = 18 x \(\frac{ 12}{60 }\)

Distance = 3.6 km