Question 1183838
Ahmed, 3x+x
His sister, x


In two years time:
Ahmed, 4x+2
His sister, x+2
He will be twice as old as sister:
{{{4x+2=2(x+2)}}}
-
{{{4x+2=2x+4}}}
{{{2x=2}}}
{{{highlight(x=1)}}}


Ahmed is 4 years old and his sister is 1 year old.