Analytical Reasoning MCQs Emergency Medical Technician (EMT) PTS Past Papers Rescue 1122

A boatman goes 2 Km against the current of the stream in 2 hour and goes 1 km along the current in 20 minutes. How long will it take to go 5 km in stationary water?

  • 2 hr
  • 4 hr
  • 1 hr 15 min
  • 2 hr 30 min
  • d
  • Speed of boatman=(Upstream + Downstream)/2
    Speed=Distance / Time
    Speed of upstream against water=2km per 2 hr=2/2=1Km/hr
    Speed of downstream=1 km per 20 min=1*60/20=3km/hr
    Total Speed of boatman=1+3/2=4/2=2 km/hr
    Time taken for 5 km in stationary water=5/2=2.5h
    1.5hr=2 hour 30 min

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