A boatman rows 1 km in 5 minutes, along the stream and 6 km in 1 hour against the stream. the speed of the strean is
Answers
Answered by
1
Soln:-
Let speed of boat=x km/h
,, ,, ,, stream = y km/h
A/Q,
1/x+y = 5/60 = 1/12
=>x+y = 12-------(1)
Again,
6/x-y = 1
=>x-y = 6-------(2)
(1)+(2)=>2x=18
=>x=9
(1)=>9+y=12
=>y=3
.·.speed of stream=3 km/h.
Let speed of boat=x km/h
,, ,, ,, stream = y km/h
A/Q,
1/x+y = 5/60 = 1/12
=>x+y = 12-------(1)
Again,
6/x-y = 1
=>x-y = 6-------(2)
(1)+(2)=>2x=18
=>x=9
(1)=>9+y=12
=>y=3
.·.speed of stream=3 km/h.
Similar questions