Are at least 20 percent of the students in City X employed?

(1) In City X, 16.8 percent of the population consists of
students.
(2) In City X, 35 percent of the students 25 years of age
and older are employed and 20 percent of the students
younger than 25 years of age are employed.

Common sense tells me the answer, and I am right!
However, I would like to know if someone can show it using math or algebra.
Thanks!

OA: _B_

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