Old women said that number of days of my grand daughter is equal to the number of months of my daughter and my age in number of years is equal to the number of weeks of my grand daughter. Sum of their ages is 115. Find the age of the old woman.

• age of grand daughter is d days d/365 years
  and age of daughter is d months d/12yrs
  and age of old women is d/7 years
  
  d/7 + d/12 + d/365 = 115years
  4380d +2555d + 84d = 115*365*12*7
  7019d = 3525900
  d = 3525900/7019 = 502
  age of old women is 502/7 71.7 years
  
• 9 years agoHelpfull: Yes(31) No(6)
• x=age of grand daughter in days,
  age of daughter=y(in months)
  z (in years)=age of grandmother
  since x=y(in months)
  since no.of years of grand mother =no.of weeks of grand daughter,z=x/7
  converting them into years=>x/365,y/12,z
  given sum of their ages =115
  x/365 + y/12 +z=115
  x/365 + x/12 +x/7=115
  x(1/365 + 1/12 + 1/7)=115
  on solving x=505
  hence age of old woman =x/7 =505/7=72
  age of women=505/12=42
  age o child =505/365=1.3(approximately)
• 9 years agoHelpfull: Yes(7) No(0)
• let x be the no. of days of grand daughter,
  x+x*30+x/7*365=115*365
  so, x=447.5
  no. of years=x/7= 64years--------------->ANSWER
• 9 years agoHelpfull: Yes(2) No(1)
• 71 years approx
  
• 9 years agoHelpfull: Yes(2) No(1)
• why x/7 = grandmotherage
  explain clearly
• 9 years agoHelpfull: Yes(1) No(0)
• since x is in number of days so to convert them into no of weeks we divide it by 7
• 9 years agoHelpfull: Yes(0) No(0)
• x+x/52+365x/(52*12)
  x=71.68
• 9 years agoHelpfull: Yes(0) No(0)