A boatman goes 2 km against the current in 1 hr & goes 1 km along the current in 10 min. How long will it take to go 5km in still water?

 

  • Option 1)

     

    40 min  

     

  • Option 2)

     

    60 min  

     

  • Option 3)

     

    75 min

     

  • Option 4)

     

    30 min 

     

  • Option 5)

     

    90 min

     

Answers (1)

Upstream Speed = 2/1 => 2 Kmph

Downstream Speed = 1 x 6 => 6 Kmph

Speed Of Boat = (6+2)/2 => 4 Kmph

Time taken to coover 5 Km = 5/4 x 60 => 75 minutes

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