Question 1154094
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Mary is less than 15 years old.  
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She is half as old as Justin.  In 11 years she will be 2/3 years old as Justin.  How old is Justin?
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Mary, y/2
Justin, y


{{{(y/2+11)=(2/3)(y+11)}}}
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{{{y/2+11=2y/3+22/3}}}
{{{6(y/2+11)=6(2y/3+22/3)}}}
{{{3y+66=4y+44}}}
{{{66-44=y}}}
{{{highlight(y=22)}}}-------------Justin, now.


Mary would be   {{{22/2=highlight_green(11)<15}}} and in agreement with first sentence.