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OpenStudy (anonymous):
Kayla bought 3 notebooks and 3 pens for $6.00. Camilo bought 2 notebooks and 4 pens for $5.00. How much did 1 notebook cost?
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OpenStudy (anonymous):
[3N +3P=6] 4 ----> 12N +12P =24 -[2N +4P=5] 3----->-(6N +12P = 15) ------------------ 6N = 9 N=9/6 = $1.50
OpenStudy (anonymous):
thanks booo (:
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