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Speed of motor boat in still water is 45...

Speed of motor boat in still water is 45 km/h. If the motor boat travels 80km along the stream in 1h 20min ,then the time taken by it to cover the same distance against the stream will be

A

3 hours

B

1 hours 20 minutes

C

2 hours 40 minutes

D

2 hours 55 minutes

Text Solution

Verified by Experts

The correct Answer is:
C
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What will be speed of stream, if speed of boat in still water is 45km/hr? A. The time taken by boat to cover 240 km upstream is 4 hours more than time taken by boat to cover same distance in downstream. B. Boat takes total 15 hours to cover 300 km in downstream and upstream.

Total distance between A and B is d kms . If the distance travelled along the stream is three time of the total distance and the distance travelled against the stream is two times of the total distance . If the time taken to cover the distance along the stream is 10% less then the time taken to cover the distance against the stream .if a person cover a distance of 21 km in 1 hr 24 min along the stream , then find the rate of current ?

Knowledge Check

  • Speed of motor boat in still water is 45 km/h.If the motor boat travels 80km a long the stream in 1h 20min ,then the time taken by it to cover the same distance against the stream will be

    A
    4 h 20 min
    B
    3 h 40 min
    C
    2 h 40 min
    D
    2 h 55 min

  • Speed of a motorboat in still water is 45 km./hr. If it takes 1 hour 20 min. to travel 80 km. downstream, how much time will it take to cover the same distance the stream ?

    A
    3 hour
    B
    1 hour 20 minute
    C
    2 hour 40 minute
    D
    2 hour 55 minute

  • A motor in still water travels at a speed of 36 km/hr. It goes 56 km upstream in 1 hour 45 min. The time taken by it to cover the same distance downstream is

    A
    2 hours 25 min
    B
    3 hours
    C
    1 hour 24 min
    D
    2 hours 21 min

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    The speed of a boat in still water is 10 km/h. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is :

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    When the speed of a boat in still water is 4 km/h and the rate of stream is 2 km/h, find upstream speed of the boat

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