Question 345470
1.{{{P=B+12}}}
.
.
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In 4 years, Paula will be P+4, Bob will be B+4.
{{{B+4=(2/3)(P+4)}}}
Multiply by 3.
{{{3(B+4)=2(P+4)}}}
{{{3B+12=2P+8}}}
{{{3B+4=2P}}}
Substitute from eq. 1,
{{{3B+4=2(B+12)}}}
{{{3B+4=2B+24}}}
{{{B=20}}}
Then,
{{{P=20+12}}}
{{{P=32}}}
Paula is 32, Bob is 20.