statistics
posted by Karen .
A study of graduates average grades and degrees showed the following results: B.S. Degrees, 15 graduates averaged Grade A, 8 graduates averaged Grade B, and 5 graduates averaged grade C. Graduates who had a B.A. Degree, 8 averaged grade A, 12 averaged grade B, and 7 averaged Grade C. If a graduate is selected at random, find this probability:
1. The graduate has a B.S. Degree, given that he or she has an A average
2. Given that the graduate has a B.A. degree, the graduate has a C average.

1. 15/total number of BS degrees = ?
2. 7/total number of BA degrees = ?
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