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The supply store sells 4 pencils for every 5 pens. The store sold 28 pencils yesterday. How many pens did the store sell?

 Aug 18, 2023

Best Answer 

 #2
avatar+177 
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The given information states that 4 pencils is sold for every 5 pens. This information can be represented mathematically as a ratio \(\frac{4 \text{ pencils}}{5 \text{ pens}}\). We know that the store sold 28 pencils yesterday. We can set up a proportion and solve to determine the number of pens sold.

 

\(\frac{4\text{ pencils}}{5\text{ pens}} = \frac{28\text{ pencils}}{p \text{ pens}} \\ 4p = 28 * 5 \\ p = \frac{28 * 5}{4} \\ p = 7 * 5 \\ p = 35 \text{ pens}\)

 Aug 19, 2023
 #1
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Let's use the given information to solve this problem. We know that the ratio of pencils to pens sold is 4:5. This means that for every 4 pencils sold, 5 pens are sold.

If the store sold 28 pencils, we can set up a proportion:

Pencils sold / Pens sold = Ratio of pencils to pens

Substituting the values:
28 pencils / Pens sold = 4 pencils / 5 pens

Now, solve for the number of pens sold:

Pens sold = (28 pencils * 4 pens) / 4 pencils
Pens sold = 33 pens

Therefore, the store sold 33 pens.

 Aug 18, 2023
 #2
avatar+177 
+1
Best Answer

The given information states that 4 pencils is sold for every 5 pens. This information can be represented mathematically as a ratio \(\frac{4 \text{ pencils}}{5 \text{ pens}}\). We know that the store sold 28 pencils yesterday. We can set up a proportion and solve to determine the number of pens sold.

 

\(\frac{4\text{ pencils}}{5\text{ pens}} = \frac{28\text{ pencils}}{p \text{ pens}} \\ 4p = 28 * 5 \\ p = \frac{28 * 5}{4} \\ p = 7 * 5 \\ p = 35 \text{ pens}\)

The3Mathketeers Aug 19, 2023

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