Q.
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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a
3.33min
b
2.15min
c
3.11min
d
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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