Can you please help me with these A B C

According to a survey, 71% of all workers read e-mail while they are talking on the phone. Suppose that 13% of those who read e-mail while they are talking on the phone write personal "to-do\" lists during meetings. Assuming that these figures are true for all workers, if a worker is randomly selected, determine the following probabilities (a) The worker reads e-mail while talking on the phone and writes personal "to- do" lists during meetings? (b) The worker does not write personal "to-do" lists given that he reads e-mail while talking on the phone? :l (c) The worker does not write personal "to-do" lists and does read email while talking on the phone? i l