Write each rate as a unit rate as a phrase, and determine which is a better buy.A 20 ounce bottle of pop costs $1.60. A 40 ounce bottle of pop costs $2.80.
A. 20 ounce bottle: $0.07 per ounce; 40 ounce bottle: $0.08 per ounce. The 20 ounce is the better buy.
B. 20 ounce bottle: $0.92 per ounce; 40 ounce bottle: $1.07 per ounce. The 20 ounce is the better buy.
C. 20 ounce bottle: $0.08 per ounce; 40 ounce bottle: $0.07 per ounce. The 40 ounce is the better buy.
D. 20 ounce bottle: $0.20 per ounce; 40 ounce bottle: $0.07 per ounce. The 40 ounce is the better buy.
Answer: C
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A. 
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