IN a lawn,grass grows equally thick and uniform rate every day.It takes 24days for 70 cows
to graze and 60 days for 30 cows.How many cows are required to graze lawn in 96 days.

• 20 cows
  
  If C is the amount of grass eaten by one cow every day
  and G is amt of grass growing every day,
  x is the initial amount of grass, then
  x+24G= 70*24*C
  x+60G= 30*60*C
  solving, G = (10/3)*C
  x= 1600C
  If n cows are required to graze lawn in 96 days,
  1600C+ 96G= 96*n*C
  1600C+320C=96nC
  n=20 cows
  
• 9 years agoHelpfull: Yes(19) No(2)
• (x+24y)*70=30*(x+60y)
  x=3y
  for 96 days suppose k cows require
  x+96y=99y
  99y*k=63y*30
  k=20
  
• 9 years agoHelpfull: Yes(6) No(1)
• 135 cows
  84 days=100 cows
  96 days=100+35
  135
• 9 years agoHelpfull: Yes(0) No(0)