
Practice Problems
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Cookies are on sale! Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80!
Write an equation to determine the normal price of each cookie \((c)\).
Find the normal price of each cookie.
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John read the first 114 pages of a novel, which was 3 pages less than ⅓ of the novel.
Write an equation to determine the total number of pages \((p)\) in the novel.
Find the total number of pages in the novel.
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In winter, the price of apples suddenly went up by $0.75 per pound. Sam bought 3 pounds of apples at the new price for a total of $5.88.
Write an equation to determine the original price per pound \((p)\).
Find the original price per pound.
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The perimeter of a rectangle is 34 units. Its width is 6.5 units.
Write an equation to determine the length \((l)\) of the rectangle.
Find the length of the rectangle.
Source: Khan Academy, https://www.khanacademy.org/math/algebra-home/alg-basic-eq-ineq/alg-linear-eq-word-probs/e/linear-equation-world-problems-2 This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License.