The groceries in a home of 3 member are enough for 24 days. If a guest comes and stays with them, how many days will the groceries last?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)