Alice bought    of a pound of grapes and ate    of a pound.  how many pounds were left?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c