Question
The cost of 6 textbooks and 4 magazines is $21.60. The cost of 3 textbooks and 4 magazines is $15.60. What is the cost of 9 textbooks and 9 magazines?
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The cost of 6 textbooks and 4 magazines is $21.60. The cost of 3 textbooks and 4 magazines is $15.60. What is the cost of 9 textbooks and 9 magazines?