Pratik takes 8 hours to travel 36 km downstream and return to the same spot. The speed of boat in still water is 12 km .per hour. Find the speed of water current.
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5
36 / 12 +c. +36/12-c =8
36(12-c + 12+c )/144-c^2 =8
36 ×24 = 144 ×8 - 8c^2
900-36 = 1152 - 8c^2
8c^2 =1152 -900 +36
8c^= 288
c^2 =36
c = 6 km/hr
36(12-c + 12+c )/144-c^2 =8
36 ×24 = 144 ×8 - 8c^2
900-36 = 1152 - 8c^2
8c^2 =1152 -900 +36
8c^= 288
c^2 =36
c = 6 km/hr
Answered by
10
The speed of water stream is 6km/hr
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