Basic College Mathematics (10th Edition)

$\frac{31}{46}$
First, you must subtract the number of full-time employees from the total number of employees. $46-15=31$, so 31 employees work part-time out of the 46 total employees. That means that the numerator--the number of part-time employees--is 31, and the denominator--the total number of employees--is 46. The final answer is $\frac{31}{46}$.