Answer:
The correct answer is 27.
Explanation:
Let's start by analyzing the information we have.
We know that Greta has a piece of clothi that is 9 yards long and has cut it into equal pieces that are 1/3.
Now, to know how many pieces of cloth Greta has, we just have to divide 9 by 1/3.
Remember that to divide fractions, you must multiply crosswise. Under the number 9 there will be a 1 as denominator. Then the division would be as follows:

In this way we should multiply 9 x 3 and 1 x 1, which would give us the following result:

In this way we can verify that the correct answer is 27.