Calculating Pen Percentages: A Simple Guide

Suppose you have a box containing various colored pens. Now, let’s explore the detailed process involved in calculating the percentages of red and blue pens in the box, which we can easily understand using a straightforward method.

Determining the Total Number of Pens

Consider a scenario where you have 60 red pens and 20 blue pens in a box. The first step in our process is to determine the total number of pens. This can be done by simply adding the number of red pens to the number of blue pens:

Total Number of Pens

Total number of pens Number of red pens Number of blue pens

Let’s substitute the given values:

Total number of pens 60 (red) 20 (blue) 80 pens

Calculating the Percentage of Red Pens

Now, to calculate the percentage of the red pens in the box, we can use a simple mathematical formula:

Percentage of Red Pens

Percentage (Number of red pens / Total number of pens) × 100

Substituting the appropriate numbers:

Percentage of red pens (60 / 80) × 100 75%

This means that 75% of the pens in the box are red.

Calculating the Percentage of Blue Pens

To find the percentage of blue pens, we can use the same formula:

Percentage of Blue Pens

Percentage of blue pens (Number of blue pens / Total number of pens) × 100

Substituting the appropriate numbers:

Percentage of blue pens (20 / 80) × 100 25%

This indicates that 25% of the pens in the box are blue.

Visualizing the Results

Here is a visual representation of the results calculated above:

Red pens: 75%

Blue pens: 25%

Conclusion

Thus, we have successfully calculated the percentages of red and blue pens in the box using a straightforward approach. The percentages are: