SOLUTION: Five years ago, mother was 1 year less than eight times Joy's age. If mother is four times Joy's age, how old is Joy now?

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Question 1132869: Five years ago, mother was 1 year less than eight times Joy's age. If mother is four times Joy's age, how old is Joy now?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
j, Joy's age
4j, Mother's age

4j-5=8%28j-5%29-1
Solve for j.