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A boat takes 2 hours to travel 8 km and ...

A boat takes 2 hours to travel 8 km and back in still water lake. With water velocity of `4 km h ^(-1),` time taken for going upstream of 8 km and coming back is

A

2 hour

B

2 hour 40 minute

C

3 hour

D

3 hour 40 minute

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-MOTION IN A STRAIGHT LINE-EXERCISE
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  14. Two objects A and B are moving with velocities v(A) and v(B) respectiv...

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  15. The relative velocity of two objects A and B is 10 m/s. If the velocit...

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  18. A boat takes 2 hours to travel 8 km and back in still water lake. With...

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  19. Two objects A and B are moving with velocities v(A) and v(B) respectiv...

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  20. A car leaves station X for station Y every 10 min. The distance betwee...

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