# students are making sandwiches for the homeless using severa

students are making sandwiches for the homeless using several ingredients, two of which are peanut butter and jelly. some students are using peanut butter, some are using jelly, some are using both, and some are using neither. the probability that a randomly-selected sandwiches had jelly was 0.47. if the probability that random selected sandwich had peanut or jelly was 0.75, what is the probability a randomly-selected sandwich had peanut and jelly?