The best buy is (d) a 9 oz box of rice $1.25
<h3>How to determine the best buy?</h3>
The best buy is the product that has the least unit rate.
The unit rate is calculated as:
Unit = Price/Weight
So, we have:
<u>Box 1:</u>
Unit rate = $0.90/6 oz = $0.150 per oz
<u>Box 2:</u>
Unit rate = $1.93/12 oz = $0.161 per oz
<u>Box 3:</u>
Unit rate = $2.42/16 oz = $0.151 per oz
<u>Box 4:</u>
Unit rate = $1.25/9 oz = $0.139 per oz
The least unit price is $0.139 per oz for box 4
Hence, the best buy is (d) a 9 oz box of rice $1.25
Read more about unit rates at:brainly.com/question/7567839
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