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/hÂ
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