Question
In a bookstore, a box of files costs twice as much as a manual. Mrs Lau spent 18 of her money to buy 8 boxes of files. She then spent 58 of her remaining money to buy some manuals and had $163.80 left. How much does each manual cost?
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In a bookstore, a box of files costs twice as much as a manual. Mrs Lau spent 18 of her money to buy 8 boxes of files. She then spent 58 of her remaining money to buy some manuals and had $163.80 left. How much does each manual cost?