Question 1204597
<pre>
                 PRICE         HOW MANY        RECEIPT SALES
Adults            2.25            y                2.25y
Children          1.5           129-y              1.5(129-y)
TOTAL                            129                233.25
</pre>
{{{2.25y+1.5(129-y)=233.25}}}--------simplify and solve for y.


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{{{2.25y-1.5y+1.5*129=233.25}}}
{{{(2.25-1.5)y=233.25-1.5*129}}}

{{{y=(233.25-1.5*129)/(2.25-1.5)}}}

{{{highlight(y=53)}}}
{{{and}}}
{{{highlight(129-y=76)}}}