This question is perfect for TESTing VALUES.
We're told that a committee is composed of W women and M men.
W = 2
M = 3
3 women and 2 men are then ADDED to the committee.....
Women = 2+3 = 5
Men = 3+2 = 5
The question asks for the probability of selecting a woman from this larger group:
5 women and 10 total people --> 5/10
So we're looking for an answer that = 5/10 = 1/2 when W=2 and M=3
Answer A: 2/3 NOT a match
Answer B: 2/(2+3) = 2/5 NOT a match
Answer C: (2+3)/(3+2) = 5/5 NOT a match
Answer D: (2+3)/(2+3+3) = 5/8 NOT a match
Answer E: (2+3)/(2+3+5) = 5/10 This IS a match
GMAT assassins aren't born, they're made,
I used TEST IT, and those exact figures. Where I went wrong was using the total number of women (5) and men (5) to solve since the question asked for enlarged which I took to mean all/total. How do I avoid this trap in the future? Practice?