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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