Question

Suppose that 12 inches of wire cost 48 cents at the same rate how many inches of wire can be bought for 28 cents

Answer 1

7 in

Explanation:

If 12 inches of wire can be bought for $0.48, we can set up the following ratio:

`\frac{12\text{ in}}{\$0.48}`

Then, to determine how many inches of wire can be bought for $0.28, set up equivalent fractions, as such:

`\frac{12\text{ in}}{\$0.48}=(x)/(\$0.28)`

Then, cross-multiply and solve for
`x`:

`\$0.48x=(\$0.28)(12)`

`\$0.48x=\$3.36`

`x=(\$3.36)/(\$0.48)`

`x=7`