Sarah is making scarfs. She has #1 3/4# yards of fabric. She needs #2 1/2# yards of fabric to make all of the scarves she wants to make. How much more fabric does Sarah need?
1 Answer
See a solution process below:
Explanation:
First, convert each number of yards from mixed numbers to improper fractions:
Needs:
Has:
To find out how much more fabric Sarah needs we can subtract how much Sarah has from how much total fabric Sarah needs:
To add or subtract fractions the must be over a common denominator. We can multiply the fraction on the left by the appropriate form of
We can now subtract the numerators over the common denominator:
Sarah needs