Question
The cost of 4 paperbacks and 3 manuals is $12.40. The cost of 2 paperbacks and 3 manuals is $10.40. What is the cost of 7 paperbacks and 7 manuals?
4 m

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The cost of 4 paperbacks and 3 manuals is $12.40. The cost of 2 paperbacks and 3 manuals is $10.40. What is the cost of 7 paperbacks and 7 manuals?