A.2 mph
B.2.5 mph
C.3 mph
D.4 mph
Show AnswerAnswer=Option A
Boats and Streams
The speed of a boat in still water in 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is:
A.1.2 km
B.1.8 km
C.2.4 km
D.3.6 km
Show AnswerAnswer=Option D
A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water______?
A.4 km/hr
B.6 km/hr
C.8 km/hr
D.Data inadequate
Show AnswerAnswer=Option B
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
A.3 km/hr
B.5 km/hr
C.8 km/hr
D.9 km/hr
Show AnswerAnswer=Option C
A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
A.4
B.5
C.6
D.10
Show AnswerAnswer=Option B
A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively______?
A.2 : 1
B.3 : 2
C.8 : 3
D.Cannot be determined
E.None of these
Show AnswerAnswer=Option C
A man’s speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man’s speed against the current is:
A.8.5 km/hr
B.9 km/hr
C.10 km/hr
D.12.5 km/hr
Show AnswerAnswer=Option C
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
A.2 hours
B.3 hours
C.4 hours
D.5 hours
Show AnswerAnswer=Option C
Speed of water in certain river is 2 km/h and it takes a boat thrice as long to row up as to row down the river. Find the speed of the boat in still water______?
A.10 km/h
B.8 km/h
C.6 km/h
D.4 km/h
Show AnswerAnswer=Option D
Imran speed of rowing in still water is 9 km/h and he finds that it takes him twice as long to row up as to row down the river. Find the speed of water in the river______?
A.3
B.3 km/h
C.1 km/h
D.1
Show AnswerAnswer=Option B