SOLUTION: Max is four times older than his sister. she is 9 years younger than max. how old is max?

Question 443188: Max is four times older than his sister.
she is 9 years younger than max.
how old is max?
Found 3 solutions by swincher4391, josmiceli, rwm:
Answer by swincher4391(1107)   (Show Source): You can put this solution on YOUR website!
M = 4 * S
S +9 = M
S+ 9 = 4S
9 = 3S
S = 3
M = 4 *3
M = 12
Max is 12, sister is 3.
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let = Sister's age
Let = Max's age
given:

By substitution,

Max is 12
check:

and

OK
Answer by rwm(914)   (Show Source): You can put this solution on YOUR website!
already answered twice why does this question still pop up.

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