Cooking oil is produced in two main varieties: mono- and polyunsaturated. Two common sources of cooking oil are corn and canola. The following table shows the number of bottles of these oils at a supermarket: type of unsaturation type of oil canola corn mono 7 13 poly 93 77

(a) If a bottle of oil is selected at random, what is the proba bility that it belongs to the polyunsaturated category?

(b) What is the probability that the chosen bottle is monoun- saturated canola oil?