Question 1136563
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Let x be the son's age 4 years ago.
Then 6x = the man's age 4 years ago.<br>
x+16 is the age of the son 12 years from now (16 years after 4 years ago);
6x+16 is the man's age 12 years from now.<br>
In 12 years, the man's age will be twice the son's age:<br>
{{{6x+16 = 2(x+16)}}}
{{{6x+16 = 2x+32}}}
{{{4x = 16}}}
{{{x = 4}}}<br>
4 years ago, the son's age was x=4 and the man's age was 6x = 24.<br>
Now, the son's age is 8 and the man's age is 28.<br>
12 years from now, the son's age will be 20 and the man's age will be 40.