The speed of a boat in still water is 12 km/h and the stream flows at a speed of 3 km/h. The distance travelled in the boat downstream in 24 minutes is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 6 km.
Speed downstream = Speed of boat + Speed of stream = 12 + 3 = 15 km/h
Time = 24 minutes = 24 ÷ 60 = 2/5 hours
Distance = Speed × Time = 15 × 2/5 = 6 km