if a man can swim downstream at 6kmph and upstream at 2kmph, his speed in still water is:

• manspeed+water=6
  manspeed-water=2
  2(manspeed)=8
  manspeed=4
• 13 years agoHelpfull: Yes(4) No(2)
• (downstream+upstream)/2 =6+2/2=4
• 13 years agoHelpfull: Yes(3) No(5)
• its 3... bcz for speed the formula is (2uv)/(u+v)... here u=6 and v=2.... So 24/8 =3
• 13 years agoHelpfull: Yes(2) No(4)
• in downstream time taken to go 1km is 1/6 hrs
  in upstream time taken to go 1km is 1/2 hrs
  in both stream (1/6)+(1/2)=2/3 hrs is taken to travel (1+1)=2km
  so, in 1 hr he can go 2*3/2=3km
  so speed is 3km/hr
  
  
• 13 years agoHelpfull: Yes(1) No(3)
• speed in still water=(downstream+upstrem)/2
• 13 years agoHelpfull: Yes(1) No(3)
• in still water (downstream+upstream)/2=(6+2)/2=4
• 13 years agoHelpfull: Yes(0) No(3)