85 men and 65 women are enrolled in calculus. There are 20 business majors, 30 biology majors, 50 computer science majors, and 50 mathematics majors. No person has a double major. If a single calculus student is chosen, find the following probabilities.

Find the probability that the student is female. P(female)=

enter your response here

(Simplify your answer. Type a fraction.)

Part 2

Find the probability that the student is a biology major. P(biology)=

enter your response here

(Simplify your answer. Type a fraction.)

Part 3

Find the probability that the student is not a business major.P(not business)=

enter your response here

(Simplify your answer. Type a fraction.)

Part 4

Find the probability that the student is a biology major or a business major. P(biology business)= enter your response here

(Simplify your answer. Type a fraction.)