The average length of three tapes is 6800 feet. None of the tapes is less than 6400 feet. What is the greatest possible length of one of the other tapes?

• The greatest possible length is:7600 feet
  Assuming the first and second tape is of equal length;(6400 feet each)
  Total length of the three tapes:6800*3=20400
  Greatest Possible length:20400-12800=7600ft
  
• 13 years agoHelpfull: Yes(59) No(2)
• x+y+z
  ----- = 6800
  3
  x>=6400
  6400 + y + z = 20400
  y + z = 14000
  to get the greatest of y and z, lets assume y = 6400
  so, z = 7600
  so ANS is 7600
• 12 years agoHelpfull: Yes(17) No(8)
• let asumme the minimum length of two tapes
  (6400+6400+x)/3=6800
  x=7600
• 10 years agoHelpfull: Yes(14) No(2)
• (6400+6400+x)/3=6800
  => x=7600
  
• 10 years agoHelpfull: Yes(8) No(2)
• Avg length of 3 tapes = 6800
  thus, (x+y+z)/3 = 6800
  x+y+z=20400
  
  Given x,y,z>=6400
  let us assume x=y=6400
  
  then 6400+6400+z = 20400
  then z= 7600
  
  The greatest possible length is 7600 ft
• 5 years agoHelpfull: Yes(0) No(0)