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For a banquet Ivana bought several dozen roses and several dozen carnations. The roses cost 20 dollars per dozen, and the cammations cost 12 dollars per doven: Ivana bought a total of 15 dozen flowers and paid a total of $260). How many roses did she buy?

 Mar 1, 2021
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x dozen roses and y dozen carnations

20x+12y=260

x+y=15

8x=80

x=10

10x12=$\boxed{120}$

 Mar 1, 2021

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