a Boat goes downstream in 8 hours it cover the same distance upstream in 12 hours if the speed of the stream is 2 km per hour(i)find the speed of the stream in still water(ii) the distance covered by boat.
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Speed of stream = 2 km/h
Let the speed in still water = x km/h
Speed of boat in downstream = (x+2)km per hour
Speed of boat in upstream = (x-2)km
per hour
Let the distance be y.
According to the question :
Time = distance / speed
y/x+2=8 this is eq. 1
y/x-2=12 this is eq. 2
Solving eq. 1 and 2
x = 2km/h
y = 16 km
Step-by-step explanation:
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