In a corporation, 50% of the male employees and 40 % of the female employee are at least 35 yrs old. If 42 % of all employees are at least 35 yrs old, what fraction of the employees in the corporation are female?
A) 3/5
B) 2/3
C) 3/4
D) 4/5
E) 5/6
A) 3/5
B) 2/3
C) 3/4
D) 4/5
E) 5/6
