To find out how many yards of pink ribbon Kristen bought, we need to calculate \( \frac{1}{3} \) of 65 yards.
We can do this by multiplying:
\[ \text{Pink ribbon} = \frac{1}{3} \times 65 \]
Calculating this gives:
\[ \text{Pink ribbon} = \frac{65}{3} \]
Now, we can divide 65 by 3:
\[ 65 \div 3 = 21 \quad \text{remainder} \quad 2 \]
So, \( 65 \div 3 = 21 \) with a remainder of 2. This means we can express \( \frac{65}{3} \) as:
\[ 21 \frac{2}{3} \]
Thus, the amount of pink ribbon Kristen bought is:
\[ \frac{65}{3} \quad \text{or} \quad 21 \frac{2}{3} \text{ yards.} \]