Acooler contains 5 bottle of orange juice, 6 bottles of apple juice, and 4 bottles of grape juice.

a. janice randomly selects a bottle from the cooler. then david randomly selects a bottle from the cooler. what is the probability that both janice and david will select orange juice? express your answer as a percent. show your work.

b. assume that both janice and david will both selected orange juice. after drinking these juices, janice and david randomly each pick another bottle from the cooler. what is the probability that neither will pick grape juice? show your work and write your answer as a percent.