Question

A jar of jelly that weighs 4.25 ounces costs $2.89. What is the cost of one ounce of jelly?

Answer 1

You do 2.89 ÷ 4.25 = $0.68, which is your answer :)

Answer 2

we know that

A jar of jelly that weighs
`4.25` ounces costs
`\$2.89`

so

by proportion

Find the cost of one ounce

`(2.89)/(4.25)(\$)/(ounces) = (x)/(1)(\$)/(ounce)\\ \\x=(2.89)/(4.25)\\ \\x=\$0.68`

therefore

the answer is

`\$0.68`