can someone please help me, i really have no idea how to do this.

roses cost 15$ per dozen, carnations cost 8$ per dozen and sara bought a total of 17 dozen flowers and paid a total of 192$. how many roses did she buy?

Question

can someone please help me, i really have no idea how to do this.

roses cost 15$ per dozen, carnations cost 8$ per dozen and sara bought a total of 17 dozen flowers and paid a total of 192$. how many roses did she buy?

anonymous · Answer

roses, r
carnations, c
r+c=17
15r+8c=192
c=17-r
15r+8(17-r)=192
solve for r

anonymous · Answer

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anonymous · Answer

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anonymous · Answer

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anonymous · Answer

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