SOLUTION: aunt jane is 31 years old. Her daughter is 13 year old. How many years ago was Aunt Jne 3 times as old as her daughter

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Question 451332: aunt jane is 31 years old. Her daughter is 13 year old. How many years ago was Aunt Jne 3 times as old as her daughter
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
31-x=3(13-x)
31-x=39-3x
2x=8
x=4 years ago
check
31-4=3*(13-4)
27=3*9
27=27
ok