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Bag a:
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10 ounces = $1.10
1 ounce = $1.10 ÷ 10 = $0.11
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Bag b:
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12 ounces = $1.38
1 ounce = $1.38 ÷ 12 = $0.115
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Bag c:
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6 ounces = $0.84
1 ounce = $0.84 ÷ 6 = $0.14
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Answer: Bag A is the best buy.
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