The speed of a boat in still water is 15 km/h and the speed of the stream is 3 km/h. How much time (in hours) will the boat take if it goes 36 km downstream?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 2.
Downstream speed = 5 + 3 = 8 km/hr
Distance = 36 km
Time = 36/18 = 2 hours