Question: In the Biotechnology class of 2000, there were X graduates. 32 of the graduates found a job, 45 continued on to their second degree and 13 did both. If only 9 people didn't do both, What is X equal to?
Options:
(A) 69.
(B) 71
(C) 73
(D) 75
(E) 76 Let's think first. Some random reasoning:
Graduates got job = 32
Graduates continued to second degree = 45
Graduates got job and continued to second degree = 13
Graduates didn't get job and didn't continue to second degree = 9
Job No Job Total
Second Degree 13 32 45
No Second Degree 19 9 28
Total 32 41 X
Therefore X = 73 The final answer: (C).