Suppose you purchase sunglasses that are regularly priced at $87.20. they are on sale for 30% off, and you have a coupon for 10% off the sale price of any item. what is the final price of the sunglasses?   a. $78.48   b. $34.88   c. $54.94   d. $52.32

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours