Which fraction is equivalent to 1/3

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Add the two expressions 4.6 x -3 + -5.3 x + 9

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?