Boat goes downstream from P to Q in 2hrs, upstream in 6hrs and if speed of stream was ½ of boat in still water. Find dist PQ

• If speed of stream is s
  and that of boat is 2s,
  If distance PQ is x, then
  x/3s= 2
  and
  x/s=6
  
  For any distance , this condition will satisfy.
  Distance travelled will depend on speed of stream and hence on speed of boat..
  
  Then
• 13 years agoHelpfull: Yes(40) No(16)
• Suppose pq represents the distance, and s represents the speed of the boat.
  Downstream, the equation for the travel time is
  pq/(s + s/2) = 2
  pq = 2(3/2s)
  pq = 3s
  
  Upstream, the equation for the travel time is
  pq/(s - s/2) = 6
  pq = 6(s/2)
  pq = 3s
  
  There is insufficient information given to find the actual distance. We can only say it is the distance the boat would travel in still water in 3 hours.
• 11 years agoHelpfull: Yes(5) No(2)
• then means wat...????
  
• 11 years agoHelpfull: Yes(1) No(3)
• Read Pargat pal singh ans....
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  Then
  Can't b determined , so ans is none.
  if it was given that speeds are integer values then ans is 6.
• 8 years agoHelpfull: Yes(1) No(0)