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A Boat Travels Upstream from B to a and Downstream from a to B in 3 Hours. If the Speed of the Boat in Still Water is 9 Km/Hr and the Speed of the Current is 3 Km/Hr, the Distance Between a and B - Mathematics

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MCQ

Solve the following question and mark the best possible option.
A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9 km/hr and the speed of the current is 3 km/hr, the distance between A and B(in km) is

Options

  • 4

  • 6

  • 8

  • 12

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Solution

let the distance between A and B be d.
Now,
`d/(9 + 3) + d/(9 - 3) = 3`

`d/12 + d/6 = 3`

D = 12 km.

Concept: Time, Distance and Speed(Entrance Exam)
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