Question

Mrs. Meister is buying some candy for the teachers at our school. She can buy a 5 1/2 ounce bag for $1.65 or she can buy a 26 ounce bag of the same candy for $10.40. Which bag of candy offers the lowest price per ounce?

Answer 1

Explanation:

To find the lowest price per ounce, we must find the unit rate (how much does it cost to buy 1 unit of something).

The way to do this is divide the price by the quantity.

Option 1)
`(1.65)/(26/5) = 1.65 * 5/26 = 8.25/26 = 33/104`

For the first option, every ounce costs $33/104.

Option 2)
`(10.4)/(26) = 0.4 = (4)/(10)`

For the second option, every ounce costs $4/10.

Since we know that 33/104 is less than 4/10, option 1 is more worth it as every ounce costs less than option 2.