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Q: The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance traveled downstream in 12 minutes is :

  • 1
    2.1 km
  • 2
    1.8 km
  • 3
    4.2 km
  • 4
    3.6 km
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Answer : 4. "3.6 km"
Explanation :

x=15 km/hr

y=3 km/hr

Downstream speed =x+y=18 km/hr

so D=speed✖Time=18✖12/60=3.6 km

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