Question

Rita needs to replace the ink cartridge for her printer. She found four brands that make replacement cartridges. The table below shows the prices and number of pages expected from each brand.

Ink Cartridges
Brand
Price
Number of Pages
A
$20.00
200
B
$25.00
125
C
$30.00
150
D
$35.00
250

Which brand is the best buy?
A
B
C
D

Answer 1

To determine the best buy based on price per page, we can calculate the cost per page for each brand using the formula:

\[
\text{Cost per Page} = \frac{\text{Price}}{\text{Number of Pages}}
\]

Now, let's calculate the cost per page for each brand:

1. **Brand A**:
\[
\text{Cost per Page} = \frac{20.00}{200} = 0.10 \text{ (10 cents per page)}
\]

2. **Brand B**:
\[
\text{Cost per Page} = \frac{25.00}{125} = 0.20 \text{ (20 cents per page)}
\]

3. **Brand C**:
\[
\text{Cost per Page} = \frac{30.00}{150} = 0.20 \text{ (20 cents per page)}
\]

4. **Brand D**:
\[
\text{Cost per Page} = \frac{35.00}{250} = 0.14 \text{ (14 cents per page)}
\]

Now let's summarize the cost per page for each brand:

- Brand A: 10 cents per page
- Brand B: 20 cents per page
- Brand C: 20 cents per page
- Brand D: 14 cents per page

From this information, **Brand A** has the lowest cost per page at **10 cents per page**, making it the best buy.