a shop stocks tinned cat food of two brands a and b and in two sizes, large and small. of the stock, 80% is brand a, 20% is brand b. of the tins of brand a, 40 % are small size whilst of the tins of brand b, 50% are small size.
a. Draw a tree diagram to represent this experiment.
b. Find the probability that a tin chosen at random from the stock will be a small size
c. Find the probability that a small tin chosen at random from the stock will be of brand A.
