SOLUTION: The sum of the age of Dokata and Zoe is 104. 12 years ago, Dokata’s age was 4 times Zoe’s age. How old is Dokata now?

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Question 1125356: The sum of the age of Dokata and Zoe is 104. 12 years ago, Dokata’s age was 4 times Zoe’s age. How old is Dokata now?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
system%28d%2Bz=104%2Cd-12=4%28z-12%29%29

Simplify and solve the system or try to write a single equation just in terms of d and solve that.