The speed of a boat in still water in 15 km/hr and the speed of stream is 5 km/hr. The distance travelled downstream in 12 minutes is?
Answer & explanation
Correct answer: option 4
ATQ,
Downstream speed = 15 + 5 = 20 km/hr.
Distance = speed x time
= 20 x \(\frac{12}{60}\) = 4 km.