A boat moves perpendicualar to the bank with a velocity of 10.8 km/h. The current carries it 200 m downstream, the time required to cross the river. (The width of the river is 0.6 km).

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3.33min

2.15min

3.11min

5.11min

answer is A.

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Detailed Solution

t=dVb=60010.8×518=6003=200sec t=20060=3.33min

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