Lauren wants to buy 3 shirts at 15.00 each. at home, she calculates the total cost as 46.20 using the sales tax of 8% . at the store, the cashier tells lauren the total cost is 48.60 . who is wrong and what mistake did he or she make ?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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?