Final answer:
Mona's dresser has three drawers, and she has a total of 27 shirts, which when equally divided among the drawers, results in 9 shirts per drawer.
Step-by-step explanation:
The question involves dividing the number of shirts equally among the drawers in Mona's dresser. Since Mona has 27 shirts and there are three drawers, we need to perform a simple division to find out how many shirts are in each drawer. The calculation will be:
27 shirts ÷ 3 drawers = 9 shirts per drawer
Therefore, there are 9 shirts in each drawer.