Question 97
The upstream speed of the boat is 40 km/hr and the speed of the boat in still water is 55 km/hr. What is the downstream speed of the boat?
Solution
Cumulative speed of boat and current( in upstream)is
40km/h but speed of the boat in still water is 55km/h.
So, Speed of the current is
(55-40)$$=15$$km/h.
In downstream ,speed of the boat would be(sum of speed of boat and speed of current)
$$55+15=70km/h$$.
B is correct choice.
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