A grocery store sells four different jars of peanut butter. Determine wh ich is the best buy, based on the cost per unit, 16 ounces for $1.71
32 ounces for $3.14
18 ounces for $1.87
36 ounces for $4.50
To find the cost per ounce for each jar of peanut butter, we divide the total cost by the number of ounces.
For the first jar, the cost per ounce is 1.71 / 16 = $0.107 per ounce.
For the second jar, the cost per ounce is 3.14 / 32 = $0.098 per ounce.
For the third jar, the cost per ounce is 1.87 / 18 = $0.104 per ounce.
For the fourth jar, the cost per ounce is 4.50 / 36 = $0.125 per ounce.
Therefore, the second jar, which is 32 ounces for $3.14, is the best buy as it has the lowest cost per ounce ($0.098 per ounce).