Analyzing Printer Performance Data

This question asks us to find the ratio between the number of pages printed by printer E on Monday and the number of pages printed by printer D on Wednesday, based on the provided table showing the number of pages printed by five printers A to E during Monday to Friday.

Extracting Relevant Data from the Table

To find the required ratio, we need to locate the specific values from the table for printer E on Monday and printer D on Wednesday.

• Locate the row for 'Monday' and the column for 'E'. The value at their intersection is the number of pages printed by printer E on Monday.
• Locate the row for 'Wednesday' and the column for 'D'. The value at their intersection is the number of pages printed by printer D on Wednesday.

From the table:

• Pages printed by printer E on Monday = 25
• Pages printed by printer D on Wednesday = 40

Calculating the Ratio

The question asks for the ratio of pages printed by printer E on Monday to pages printed by printer D on Wednesday. The ratio is expressed as:

Ratio = (Pages by E on Monday) : (Pages by D on Wednesday)

Substituting the values we found:

Ratio = 25 : 40

Simplifying the Ratio

To simplify the ratio 25 : 40, we need to find the greatest common divisor (GCD) of 25 and 40. The factors of 25 are 1, 5, 25. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40. The greatest common divisor of 25 and 40 is 5.

Now, divide both parts of the ratio by the GCD (5):

$\frac{25}{5} : \frac{40}{5} = 5 : 8$

So, the ratio between pages printed by printer E on Monday and pages printed by printer D on Wednesday is 5 : 8.

Conclusion on Printer Performance Ratio

Based on our calculation using the data from the table, the ratio of pages printed by printer E on Monday to printer D on Wednesday is 5 : 8.

Revision Table for Data Interpretation

Reviewing the key data points used:

Additional Information on Ratios and Data Analysis

Understanding ratios is crucial in data interpretation. A ratio is a comparison of two quantities of the same unit.

• Simplifying Ratios: Ratios are usually expressed in their simplest form by dividing both parts by their greatest common divisor. This makes the comparison easier to understand.
• Data Tables: Data tables organize information in rows and columns, making it easy to find specific data points. Carefully reading the row and column headers is essential.
• Applying Ratios: Ratios can be used to compare performance, quantities, or any measurable aspects from data sets like the printer page count.