Question 1061416
{{{P/Q=6/7}}}
{{{7P=6Q}}}
.
.
{{{Q=P+3}}}
Substituting,
{{{7P=6(P+3)}}}
{{{7P=6P+18}}}
{{{P=18}}}
So then,
{{{Q=18+3}}}
{{{Q=21}}}
So in 4 years,
{{{P=18+4=22}}}
{{{Q=21+4=25}}}