Solution:
Given the table;
(a) The probability that a person prefers to drink sprite;
Thus, the probability is;
(b) The probability that a person is between 21 and 40 years old;
Thus, the probability is;
(c) The probability that a person drinks lemonade given they are between 21 and 40;
Thus, the probability is;
(d) The probability that a person drinks sprite given they are under 21 years of age;
Thus, the probability is;