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?
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let speed of boat be x and speed of stream be y
them speed of boat downstream is x+y and upstream is x-y
now
16/x+y=2
x+y=8---------------------------1
and 16/x-y=4
x-y=4-----------------------2
from 1 ad 2
x=6
and y=2
speed of boat in still water is 6km/hr
them speed of boat downstream is x+y and upstream is x-y
now
16/x+y=2
x+y=8---------------------------1
and 16/x-y=4
x-y=4-----------------------2
from 1 ad 2
x=6
and y=2
speed of boat in still water is 6km/hr
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