Bob ate at a restaurant one night with 2 friends. The cost of his meal was 10% of the total food bill but not clearly shown on the receipt. He knows that his group tipped either 15% or 18%, but he’s not sure which. At which table did Bob sit and what was the cost of his meal? What percent did his table tip?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?