Mr. Ishimoto ordered [tex]\(x\)[/tex] new math books and [tex]\(y\)[/tex] new workbooks for his class. The total weight of the box of books cannot be more than 50 pounds. If each math book weighs 3.2 pounds and each workbook weighs 0.8 pounds, which inequality represents the maximum number of each type of book that can be shipped in a single box?

A. [tex]\(3.2x + 0.8y \ \textless \ 50\)[/tex]
B. [tex]\(3.2x + 0.8y \leq 50\)[/tex]
C. [tex]\(0.8x + 3.2y \ \textless \ 50\)[/tex]
D. [tex]\(0.8x + 3.2y \leq 50\)[/tex]



Answer :

Let's break down the problem step-by-step to determine the correct inequality representing the maximum number of each type of book that can be shipped in a single box.

1. Understand the given data:
- Each math book weighs 3.2 pounds.
- Each workbook weighs 0.8 pounds.
- The total weight of the box cannot exceed 50 pounds.

2. Formulate the weight equation:
- Let [tex]\(x\)[/tex] be the number of math books.
- Let [tex]\(y\)[/tex] be the number of workbooks.
- The total weight contributed by the math books in the box is [tex]\(3.2x\)[/tex] (since each math book weighs 3.2 pounds).
- The total weight contributed by the workbooks in the box is [tex]\(0.8y\)[/tex] (since each workbook weighs 0.8 pounds).
- The combined weight of the math books and workbooks in the box is [tex]\(3.2x + 0.8y\)[/tex].

3. Set up the inequality:
- The total weight of all the books in the box must not exceed 50 pounds. Therefore, we can represent this situation with the inequality [tex]\(3.2x + 0.8y \leq 50\)[/tex].

4. Verify the options:
- [tex]\(3.2x + 0.8y < 50\)[/tex]: This option implies that the total weight must be strictly less than 50 pounds, which does not account for the case when the total weight is exactly 50 pounds.
- [tex]\(3.2x + 0.8y \leq 50\)[/tex]: This option accurately represents that the total weight can be up to 50 pounds, but not exceeding it.
- [tex]\(0.8x + 3.2y < 50\)[/tex]: This switches the coefficients for math books and workbooks, which is incorrect.
- [tex]\(0.8x + 3.2y \leq 50\)[/tex]: This option also incorrectly switches the coefficients for math books and workbooks.

Based on the analysis, the correct inequality is:
[tex]\[ 3.2x + 0.8y \leq 50 \][/tex]

Thus, the correct answer is:
[tex]\[ \boxed{3.2x + 0.8y \leq 50} \][/tex]