The answer to this question would be:
Jim =6 years
Harry =2 years
To answer this question, you need to translate the description into a mathematical equation. If H= Harry's ages and J= Jim's ages, then the equation should be look like this:
1. H+4= J
2. (J+2)= 2(H+2)
J+2= 2H+4
J= 2H +2
If you put the 1st and 2nd equation together, the result would be:
H+4= J
H+4= (2H +2)
H-2H= 2-4
-H= -2
H=2
After that insert the H value to either 1st or 2nd equation.
H+4= J
2+4=J
J= 6
