My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 140 years. Can you tell me my age in years? Pick:  A) 80  B) 90  C) 85  D) 84  E) 89
let the age of the man = x years   so according to the given condition   age of my grandson = x/12 years   and age of my son = x30/52 = 15x/26   and x + (x/12) + (15x/26) = 140   or (156x+13x+90x)/156 = 140   or 259x = 156*140   or x = 156*140/259 = 84   ANSWER:84
<result>D</result>
My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 140 years. Can you tell me my age in years?