The Student Activities Office at Saint Patrick's College has historically found that the following data describes the participation rates of undergraduates in intramural sports.

What is the chance that an undergraduate student selected at random who plays intramural athletics is a senior?

Express the answer precisely without insignificantdigits using a percent symbol

Undergraduate Percentage Percentage Class Of of o . Student PartICIpants Population 1\" Intramural Athletics First- 40% 10% Years/Freshmen