The instructions state that Cheryl needs 4/9 square yards of one type of material and 2/3 square yards of another type of material for a project. She buys exactly that amount. After finishing the project, however, she has 8/18 square yards left that she did not use. What is the total amount of square yards of material Cheryl used?	Select:
A) 1/12	B) 1/9	C) 2/3	D) 1 1/9	E) 2 1/9
Total bought = 4/9+2/3   left part 8/18---&gt;4/9   so used part 4/9+2/3-4/9=2/3   ANSWER:2/3
<result>C</result>
The instructions state that Cheryl needs 4/9 square yards of one type of material and 2/3 square yards of another type of material for a project. She buys exactly that amount. After finishing the project, however, she has 8/18 square yards left that she did not use. What is the total amount of square yards of material Cheryl used?