To find how many total pieces she can cut, you need to divide the total length of the piece she has by the length of the piece she wants to cut:
12 1/3 / 3/4
Convert the total length to an improper fraction:
12 1/3 = 37/3
Now you have 37/3 / 3/4
When dividing two fractions, flip the second one over and multiply the two top numbers and the two bottom numbers:
37/3 x 4/3 = 37x4 / 3x3 = 148 / 9 = 16.44, which rounds down to 16.
The answer is C.
