A6-pack of undershirts cost 13.98.this is 3.96 less then the cost of buying 6 individual shirts. if each undershirt costs the same amount how much does each undershirt cost when purchased individually?

Jane is cooking beans and rice for dinner tonight. she has 4 cans of black beans, 6 cans of red beans, and 3 cans of garbanzo beans in her cupboard. if she grabs a can of beans without looking at the label, what is the probability of her making black beans and rice for dinner?