Practice Problems

  1. 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.

  2. 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.

  3. 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.

  4. 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
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