Mr. Fernandez uses 7 boards that are 4 feet long and 6 inches wide to make on bookshelf. If he buys lumber in lengths of 8 feet with a width of 12 inches, how many pieces of lumber does he need to purchase to make 5 bookshelves?
Bookshelf =7boards each Lumber=4 boards each He wants to make 5 bookshelves total 5x7=35 So he needs 35 boards And each lumber makes 4 boards So what number times 4 is equal to or more than 35?
9times 4 is 36
So he needs 9 pieces of lumber to make 5 bookshelves.
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