Question

a package of nine 12-ounce cans of cola costs $7.50. a half-gallon bottle of the same cola is sold for $2.90. which cola has a cheaper price, the cans or the bottle?

Explanation:

Step1: Calculate total ounces in cans

There are 9 cans, each 12 ounces. So total ounces for cans: $9\times12 = 108$ ounces.

Step2: Calculate cost per ounce for cans

Cost of cans is $7.50. Cost per ounce: $\frac{7.50}{108} \approx 0.0694$ dollars per ounce.

Step3: Convert half - gallon to ounces

1 gallon = 128 ounces, so half - gallon = $\frac{128}{2}=64$ ounces.

Step4: Calculate cost per ounce for bottle

Cost of bottle is $2.90. Cost per ounce: $\frac{2.90}{64}\approx0.0453$ dollars per ounce.

Step5: Compare the two costs

Since $0.0453<0.0694$, the bottle has a cheaper cost per ounce.

Answer:

The bottle (half - gallon bottle) of cola has a cheaper price.