avearge age of 6 runs of a family is 8 years.average age of sons together with their parents is 22 years.,if father is older than mother by 8 years.the age of the mother is?

• avearge age of 6 runs of a family is 8 years
  
  RUNS?????
• 8 years agoHelpfull: Yes(1) No(0)
• father age = 68 and mother age=60
• 8 years agoHelpfull: Yes(0) No(1)
• Sum of ages of all 6 sons = average age of all sons * number of sons
  = 8*6
  = 48
  Sum of age of all Family = Father's Age + Sum of ages of all sons + Mother's age
  22 * 8 = F + 48 + M ................(1)
  F = M+8........(2)
  So, F+M+48 = 22*8 (from eq. (1))
  M+8+M+48 = 176 (from eq. (2))
  M = 60 years
  
• 8 years agoHelpfull: Yes(0) No(0)