Question

19 Ms. Sullivan bought some pens at the school supply store, including 5 red pens. 25% of all the pens she bought were red. How many pens did Ms. Sullivan buy in all? O A. 12 O B. 15 O C. O D. 25 20 Reset Next​

Answer 1

Ms. Sullivan bought a total of 20 pens, as the 5 red pens she purchased account for 25% of her total pen purchase.

Step-by-step explanation:

The question asks how many pens Ms. Sullivan bought in all if 25% of them were red and she bought 5 red pens.

To find the total number of pens, we need to understand that the 5 red pens represent 25% of the total purchase.

Since 25% is equivalent to ⅔ (or 1/4), we can calculate the full amount by dividing the number of red pens by 0.25 (or 1/4).

So, the calculation is as follows:

Total pens = Number of red pens ÷ 0.25
Total pens = 5 ÷ 0.25
Total pens = 5 ÷ 4
Total pens = 20

Thus, Ms. Sullivan bought 20 pens in all.