young_gun wrote:

is there a way to do this problem in table/matrix format?

In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master's degrees, how many of the employees over 40 have master's degrees?

(1) Exactly 100 of the employees are college graduates

(2) Of the employees forty years old of less, 25 percent have master's degrees

50% have college degrees and 60% are 40+. 3/10*6/10 --> 18/100 have masters degrees and are over 40.

1: x/2=100 --> x=200 Suff thus answer is 36

2: No help here, we need an actual number.

A.