In a class of 6060 students, 4040 are democrats, 1010 are business majors, and 33 of the business majors are democrats. if one student is randomly selected from the class, find the probability of choosing a democrat or a business major.

100 (whole class is 100%) / 6060 (number of students total) = any random student chance

0.0165

A) for democrats multiply chance of any random student with number of democrats

0.0165*4040=66.66666 ...

B) for business majors, multiply that chance with number of business majors

0.0165*1010=16.66666 ...

C) for both business major and democrat multiply chance with numbers of students who are both

0.0165*33=0.544 ...