In a group of 40 people, 10 are healthy and every person the of the remaining 30 has either highblood pressure, a high level of cholesterol or both. If 15 have high blood pressure and 25 havehigh level of cholesterol,a) how many people have high blood pressure and a high level of cholesterol?If a person is selected randomly from this group, what is the probability that he/sheb) has high blood pressure (event A)?c) has high level of cholesterol(event B)?d) has high blood pressure and high level of cholesterol (event A and B)?e) has either high blood pressure or high level of cholesterol (event A or B)?f) Use the above to check the probability formula: P(A or B) = P(A) + P(B) – P(A and B).