SOLUTION: Isaac is 90 years old. Riley is 38 years old. How many years ago was isaacs age 5 times Riley’s age?

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Question 1165735: Isaac is 90 years old. Riley is 38 years old. How many years ago was isaacs age 5 times Riley’s age?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
90, Isaac
38, Riley

90-y=5%2838-y%29
Solve.