A boat can travel with a speed of 22 km/hr in still water. If the speed of the stream is 5 km/hr, find the time taken by the boat to go 54 km downstream
5 hours
4 hours
3 hours
2 hours
Explanation:
Speed of the boat in still water = 22 km/hr
speed of the stream = 5 km/hr
Speed downstream = (22+5) = 27 km/hr
Distance travelled downstream = 54 km
Time taken $=\dfrac{\text{distance}}{\text{speed}} = \dfrac{54}{27}\text{ = 2 hours}$