Question 1154251
<pre>
ITEM      QTY,VARIABLE    PRICE   COST

Pens         x             5       5x

Pencils      y             3       3y

Notebooks    n=x+y         9       9n=9(x+y)
</pre>

{{{5x=3y}}} according to description.


Also limit is 102 dollars, so  {{{5x+3y+9(x+y)<=102}}}.


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If EQUAL cost to 102 and substitute for 3y, then:
{{{5x+5x+9x+3*3y=102}}}
{{{5x+5x+9x+3*5x=102}}}
{{{10x+15x+9x=102}}}
{{{34x=102}}}
{{{highlight(x=3)}}}-------------- 3 pens, 5 pencils, 8 notebooks