Question 1156121
Price multiplied by quantity equals cost.


<pre>
FLOWER        PRICE       QUANT.     COST
 
carnations       1.5        c

roses           5.75        d-20

daisies         2.6         d

TOTALS                    200          589.5
</pre>
{{{system(c+(d-20)+d=200,1.5c+5.75(d-20)+2.6d=589.5)}}}


{{{system(c+2d=220,1.5c+8.35d=704.5)}}}


{{{substitute}}}{{{for}}}{{{c}}}:
{{{1.5(220-2d)+8.35d=704.5}}}
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