Question 1044504

A mother is 2 and  a half times older than her daughter, Mary.In 4 years time, the ratio of their age will be 3:1. Find the present age of the mother?
Please help
<pre>Mother: {{{highlight_green(matrix(1,2, 56, years-old))}}}
Be reminded that {{{2&1/2}}} times OLDER means {{{3&1/2}}} times AS OLD as the daughter.