Levi and Henry go to the movie theater and purchase refreshments for their friends.

Levi spends a total of $71.25 on 5 bags of popcorn and 5 drinks.

Henry spends a total of $90.75 on 15 bags of popcorn and 3 drinks.

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?