Challenger App

No.1 PSC Learning App

1M+ Downloads
In one hour, a boat goes 13 km/hr in the direction of the stream and 7 km/hr against the direction of the stream. What will be the speed of the boat in still water?

A8 km/hr

B10 km/hr

C14 km/hr

D6 km/hr

Answer:

B. 10 km/hr

Read Explanation:

Speed of a boat in still water = ½ (DownstreamSpeed + UpstreamSpeed) Speed of boat in still water = ½ (13+7) = ½ × 20 = 10 km/hr


Related Questions:

A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of bthe boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is
If time upstream = n × time downstream and speed in still water is 'x' and speed of stream is 'y', then find x : y.
Speed of motorboat in still water is 45kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be
if the speed of a boat in still water is 13 km/h and the speed of the current is 12 km/h. Find the time taken by a boat to travel 50 km with the current?
A boat can travel 27 km in one hour in still water and travels the same distance against the stream in 90 minutes. How much time will the boat take to travel 90km in the direction of stream?