SOLUTION: A large university employs 43 math teachers and 31 English teachers. 18 of the math teachers teach only night classes and 22 of the English professors teach only day classes. Wha

Question 1141167: A large university employs 43 math teachers and 31 English teachers. 18 of the math teachers teach only night classes and 22 of the English professors teach only day classes. What is the probability that a randomly chosen person from this group is either a math professor or teaches only night classes?
(Set up table)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Teachers M------E. Total
D--------25-----22--47
N--------18------9--27
T---------43-----31--74
Math professor 43 possibilities, night classes 27, total 70
subtract double counting which is math/night or 18 and the probability is 52/74 or 26/37

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