50 POINTS: Please help thank you so much!! (Image attached) The polygons are similar. Find the values of the variables. I know from the answer key that the answers are x=12
and y=8 but I'm not sure how to get there...​

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?