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OpenStudy (anonymous):
Please help, fan and medal <3 Mark went to an electronic store, purchased 2 CDs and 6 DVDs, and spent $156. Antonio went to the same store, bought 1 CD and 9 DVDs, and spent $210. How much does each CD sell for at the store?
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OpenStudy (anonymous):
@Hero
OpenStudy (mokeira):
@izthewiz7 have a look at how i have done it...i hope you understand
OpenStudy (anonymous):
omg, I understand! thank you so much. you're great.
OpenStudy (mokeira):
you're welcome :)
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