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A boat going downstreame took 30 min to ...

A boat going downstreame took 30 min to go from point A to point B, the return trip took the boat now 60 min. what time will the boat require to cover the the distance from A and B when the motor is turned off speed of baot relative to the water is constant

A

120 min

B

60 min

C

90 min

D

20 min

Text Solution

Verified by Experts

The correct Answer is:
A
`x/30=v_(br)+v_(r) rArr x/60=v_(br)-v_(r)`
`x/60=2v_(r) rArr x/(v_(r)) =120` min
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