Question
Downstream speed of a boat is 16 km /hr. Speed of stream
is 40% less than the speed of boat. Find the speed of boat?Solution
Let speed of boat = x km/h. Then, speed of stream = x − 0.4x = 0.6x Downstream speed = boat + stream ⇒ x + 0.6x = 1.6x Given 1.6x = 16. Thus, ⇒ x = 16/ 1.6 = 10 km/h
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