Question 831402
1.{{{M=3W}}}
In 23 years,
2.{{{(M+23)=2(W+23)}}}
Substitute eq. 1 in eq. 2,
{{{3W+23=2W+46}}}
{{{highlight(W=23)}}}
Then from eq. 1,
{{{M=3(23)}}}
{{{highlight(M=69)}}}