Question 145
The speed of boat when travelling downstream is 32 km/hr whereas when travelling upstream it is 28 km/hr. What is the speed of the boat in still water ?
Solution
Let the speed of boat be b and that of water be w.
Hence, b+w = 32
and b-w = 28
Adding both eqns together, 2b = 60
b=30km/hr
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