Joe's age , Joe's sister's age and Joe's fathers age sums up to a century. When sox s as old as his father, Joe's sister will be twice as old as now. When Joe is as old as his father then his father is twice as old as when his sister was as old as her father

• solve it..
• 12 years agoHelpfull: Yes(10) No(20)
• joe's age=30
  joe's sister's age=20
  joe's father's age=50
• 11 years agoHelpfull: Yes(4) No(8)