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Q:

A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is : 

  • 1
    21 km
  • 2
    25 km
  • 3
    16 km
  • 4
    18 km
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Answer : 1. "21 km "

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