Question 1027232: One 20 ounce carton of ice cream costs $2.75. A 24 ounce
of the same ice cream costs $4.25. Which is the better
buy for the money? Found 2 solutions by Alan3354, FrankM:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! One 20 ounce carton of ice cream costs $2.75. A 24 ounce
of the same ice cream costs $4.25. Which is the better
buy for the money?
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Divide the cost by the amount.
See which is less expensive.
You can put this solution on YOUR website! First - the "back of envelope method" - this means we use estimates to help us understand the answer.
If ice cream were 15 cents an ounce, 20oz would be $3.00, and 24oz, $3.60.
The 20oz container is less than $3.00 (therefore, less than 15c/oz)
and
The 24oz container is more than $3.60 (therefore, more than 15c/oz)
so the 20oz is lower per ounce, and the better deal.
Now, let's pull out the calculator 275/20= 13.75 cents an ounce. 425/24 = 17.71 cents an ounce, confirming the 20 ounce container is better.
