InterviewSolution
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InterviewSolution
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Two swimmers start a race. One who reaches the point `C` first on the other bank wins the race.`A` makes his strokes in a direction of `37^(0)` to the river flow with velocity `5km//hr` relative to water. `B` makes his strokes in a direction `127^(0)` to the river flow with same relative velocity.River is flowing with speed of `2km//hr` and is `100m` wide.speeds of `A` and `B` on the ground are `8km//hr` and `6km//hr` respectively. A. `A` will win the raceB. `B` will win the raceC. the time taken by `A` to reach the point `C` is `165 sec`D. the time taken by `B` to reach the point `C` is `150 sec` |
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Answer» Correct Answer - A::D time to cross river `=100/(5xxsin 37xx5/18)=120 sec` Drift covered `=(2+5xxcos 37)xx5/18xx120=200` Distance covered by walk `=100` meters and time taken `=20` seconds And similarly for swimmer `B` |
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