if a person is randomly selected from the sample below, find the probability of getting someone who is 18-22 OR does not smoke. smoking habits: 186 people in the 18-22 age bracket (42 of whom smoke)...

if a person is randomly selected from the sample below, find the probability of getting someone who is 18-22 OR does not smoke.

smoking habits:

186 people in the 18-22 age bracket (42 of whom smoke)

124 people  in the 23-30 age bracket (40 whom smoke)

99 people in the 31-40 age bracket (21 whom smoke)

Please provide step by step solution.  if you use a formula please input the actual numbers.  Thx