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Mathematics, 21.05.2021 02:20 rebtav

Pete is making a bookcase for his books and other stuff. He already has plenty of bricks and can get planks of wood for $2.50 each. Each plank of wood measures 1 inch by 9 inches by 48 inches. Each brick measures 3 inches by 4.5 inches by 9 inches. For each shelf, Pete will put three bricks at each end then put a plank of wood on top. The diagram shows three shelves.​

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