Respuesta :

perixwinkle
Let's make the variable P and M.
4M=P
P+6+6+M=57
Let's put the first equation in as Paula's age.
4M+12+M=57
5M+12=57
5M=45
45÷5
9
Mary's present age is 9, so Paula's age is 36.
Let's check the sum of their ages in 6 years.
15+42
57

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