<PRE><B>Question 332406</B>
the roses cost $15 per dozen and the carnations cost $8 per dozen. shereda bought a total of 17 dozen flowers and paid a total of $192. how many roses did she buy?
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Roses $15 per dozen
carnations $8 per dozen
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total 17 dozens - $192
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assume she bought x doz. roses
so she bought 17-x doz. carnations
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cost of roses + cost of carnations = 192
15x+8*(17-x)=192
15x+136-8x=192
7x+136=192
add -132
7x+136-136=192-136
7x=56
x= 8 dozens of roses.
17-8 = 9 dozens of carnations
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8*15+9*8=192</PRE>