Problema Solution
There are 3 children in the Santos family, two of them twins. The sum of the ages of the children is 42 and the twins are 3 years older than Patricia,the youngest child. How old is Patricia?
Answer provided by our tutors
let
p = the age of Patricia
t = the age of the twins
the sum of the ages of the children is 42
p + t + t = 42
p + 2t = 42
the twins are 3 years older than Patricia,the youngest child
t = p + 3
plug t = p + 3 into p + 2t = 42
p + 2(p + 3) = 42
by solving we find
p = 12 years
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Patricia is 12 years old.