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

Answer 1

The brand of cartridge which is the best buy us the brand with the lowest unit price which is brand A.

Unit price

Brand A

Cost = $20

pages = 200

Unit price = $20/200

= $0.1 per page

Brand B:

Cost = $25

Pages = 125

Unit price = $25/125

= $0.2 per page

Brand C:

Cost = $30

Pages = 150

Unit price = $30 / 150

= $0.2 per page

Brand D:

Cost = $35

Pages = 250

Unit price = $35 / 250

= $0.14 per page

Therefore, the brand of cartridge which is the best buy us the brand with the lowest unit price which is brand A.

Learn more about unit price:

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