Sarah's craft project uses pieces of yarn that are 1/8 yard long. She has a piece of yarn that is 3 yards long. How many 1/8 yard pieces can she cut and still have 1 1/4 yards left?

Answer :

Let the required number of yarn be x, then
3 - 1/8x = 1 1/4
1/8x = 3 - 1 1/4 = 1 3/4
x = 1 3/4 / 1/8 = 14

Therefore, she can cut 14 pieces of yarn.

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