Question 1159724
A, Adamu now
3A, Father now


{{{A+10=(1/2)(3A+10)}}}
-
{{{2A+20=3A+10}}}
{{{10=A}}}------------Adamu's age now
-
{{{30}}}------------Father's age now



Their ages in ten years will be:
20 for Adamu
40 for his father