Mathematics, 02.12.2021 20:30, williamabigan

Daryl wants to buy a science book and a math book. The cost of a science book is $8 more than the cost of a math book. The cost of 9 math books is the same as the cost of 7 science books. What is the cost of each book?

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Daryl wants to buy a science book and a math book. The cost of a science book is $8 more than the co...