reduced sodium peanuts: 7
normal peanuts: 5
reduced sodium granola bars: 3
normal granola bars: 5
probability of getting a reduced sodium peanut bag: 7/12
probability of getting a reduced sodium granola bar: 3/8
multiply the probabilities because they're separate events:
7/12 * 3/8=
(7*3)/(12*8)=
21/96=
7/32