Question 1036689

The age of a person is 8 years more than thrice the age of the sum of his two grandsons who were twins.. After 8 years his age will be 10 years more than twice of the sum of the ages of his grandsons... Find the age of the person when twins were born... 
<pre>Twins are 13 each
Person is 86, so person was: {{{highlight_green(matrix(1,4, 86 - 13, or, 73, years-old))}}} when the twins were born