Which number sentence should be used to solve this problem? Paul used 15.55 feet of rope to make a tree swing. He used 27.42 feet of rope to make a rope ladder. How much rope did Paul use to make the tree swing and the rope ladder? A. 15.55 + 27.42 = ? B. 27.42 - 15.55 = ? C. 15.55 - 27.42 = ?