A grocery store sells four different jars of peanut butter. Determine which is the best buy, based on the cost per unit.
10 ounces for $1.05
20 ounces for $1.86
26 ounces for $3.22
34 ounces for $3.71
To determine the best buy based on the cost per unit, we need to calculate the cost per ounce for each jar of peanut butter. To do this, we divide the price by the number of ounces.
1. For the 10-ounce jar: $1.05 / 10 ounces = $0.105 per ounce
2. For the 20-ounce jar: $1.86 / 20 ounces = $0.093 per ounce
3. For the 26-ounce jar: $3.22 / 26 ounces = $0.1238 per ounce
4. For the 34-ounce jar: $3.71 / 34 ounces = $0.1091 per ounce
Based on the cost per ounce, the 20-ounce jar at $0.093 per ounce is the best buy since it offers the lowest cost per unit.