18.
A boat goes downstream and covers the distance between two ports in 4 hrs while it covers the same distance
upstream in 5 hrs. If the speed of the stream is 2 kmph, the speed of the boat in still water is
(1) 15 km/hr
(2) 20 km/hr
(3) 24 km/hr
(4) 18 km/hr
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Answer:
20 km/hr this is correct answer
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