Question

Cheryl is buying lace for her dance costume. One foot of lace costs 3 dollars. How much does each amount cost?

3/4 of a foot?

Answer 1

3/4 of a foot will cost $2.25.

Explanation:

This question is solved by rule of three, due to proportions.

One foot of lace costs 3 dollars. How much is 3/4 of a foot going to cost?

1 foot - 3 dollars

3/4 foot - x dollars

`x = 3 * (3)/(4) = (9)/(4) = 2.25`

So

3/4 of a foot will cost $2.25.