Question
The cost of 4 textbooks and 4 manuals is $29.60. The cost of 2 textbooks and 4 manuals is $19.60. What is the cost of 7 textbooks and 7 manuals?
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The cost of 4 textbooks and 4 manuals is $29.60. The cost of 2 textbooks and 4 manuals is $19.60. What is the cost of 7 textbooks and 7 manuals?