Question 1121287

Michael.  Is 1/3 of his fathers age in 13 years he will be half his fathers age how old is Michael now ?
<pre>Let Michael be M
Then father is 3M
In 13 years, father will be 3M + 13, and Michael, M + 13
We then get: 3M + 13 = 2(M + 13)
3M + 13 = 2M + 26
3M - 2M = 26 - 13
M, or Michael is: {{{highlight_green(matrix(1,2, 13, "years-old"))}}}