SOLUTION: a wife is double her first born age and five years younger than his husband. their total of years is hundred, how old is the first born

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Question 1074739: a wife is double her first born age and five years younger than his husband. their total of years is hundred, how old is the first born
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
w, wife
b, first born child
h, husband

system%28w=2b%2Cw=h-5%2Cw%2Bb%2Bh=100%29

Put b and h in terms of w.
system%28b=w%2F2%2Ch=w%2B5%29

Substitute into sum of ages.
w%2Bw%2F2%2Bw%2B5=100
Solve for w; and then continue...