Problema Solution
Mia's mother is four times as old as Mia. In 16 years, her mother will be twice her age. How old is Mia now?
Answer provided by our tutors
let
x = the age of Mia
y = the age of Mia's mother
Mia's mother is four times as old as Mia
y = 4x
in 16 years, her mother will be twice her age
y + 16 = 2(x + 16)
plug y = 4x into y + 16 = 2(x + 16)
4x + 16 = 2(x + 16)
by solving the equation we find
x = 8 years
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Mia is 8 years old now.