Question
The cost of 6 textbooks and 4 comics is $26.40. The cost of 3 textbooks and 4 comics is $20.40. What is the cost of 7 textbooks and 7 comics?
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The cost of 6 textbooks and 4 comics is $26.40. The cost of 3 textbooks and 4 comics is $20.40. What is the cost of 7 textbooks and 7 comics?