What is the difference in price per ounce?
A 30-ounce box of cornflakes costs $1.79 and a 3-lb box costs $1.87. To the nearest tenth what is the difference in price per ounce?
A 30-ounce box of cornflakes costs $1.79 and a 3-lb box costs $1.87. To the nearest tenth what is the difference in price per ounce?
1 Answer
Mar 26, 2018
Explanation:
The first thing you need to do, is convert everything into the same units. Since we are dealing with ounces we convert pounds to ounces.
There are 16 ounces in 1 lb, so we have 3 lb, which is:
If a 30 oz box costs $1.79, then 1 oz costs:
The 3 lb box is 48 ounces. Price per ounce:
The difference is:
To the nearest 10th this is:
Notice we converted dollars and cents to just cents, this makes it easier to work with, since we don't have the decimal point.
