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Solve each system by using multiplication with the addition-or-subtraction method. p over 8 + q over 6 = 1 p over q = negative two-thirds
At Gwen's garage sale, all books were one price, and all magazines were another price. Harriet bought four books and three magazines for $1.45 and June bought two books and five magazines for $1.25. What was the price of a book and what was the price for a magazine?
An alloy weighing 20 lbs is 30% copper. How many pounds of another alloy, which is 80% copper, must be added for the final alloy to be 60% copper.
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