3 friends A,B,C went for week end party to McDonald's restaurant and there they measure there weights in some order in 7 rounds. A, B, C, AB, BC, AC, ABC. Final round measure is 155 kg, then find the average weight of all the 7 rounds?

• 155 is the sum of ages of all three frnd
  here A+B+C+A+B+B+C+A+C+A+B+C=4(A+B+C)
  and we know that A+B+C=155
  hence total sum of 7 rounds = 4*155= 620
  and avg = 4*155/7
• 13 years agoHelpfull: Yes(78) No(4)
• A+B+C=155
  A+B+C+A+B+B+C+A+C+A+B+C=4(A+B+C)
  total sum will be = 4*155=620
  then the average is = 620/7=88.57
• 9 years agoHelpfull: Yes(4) No(2)
• Final Measure ABC=155
  A = 155/3=51.7, B=51.7 , C=51.7
  AB=51.7+51.7=103.4,(similar to BC and CA) BC=103.4 ,CA=103.4
  Average weight of all 7 rounds=(A+B+C+AB+BC+CA+ABC)/7=88.5
• 7 years agoHelpfull: Yes(1) No(0)
• given,A+B+C=155
  A+B+C+A+B+B+C+A+C+A+B+C=4(A+B+C)
  total sum will be = 4*155=620
  then the average is = 620/7=88.57
• 9 years agoHelpfull: Yes(0) No(0)
• abc=155kg.
  so in yhe above 7 ways they completed the abc pattern 4 times .
  so average is (155*4)/7=88.57
• 9 years agoHelpfull: Yes(0) No(0)
• 88.75
• 9 years agoHelpfull: Yes(0) No(0)