Mei is the manager of a hotel. She is placing rectangular rugs on the wood floors throughout the rectangular hotel lobby. The lobby is 38 feet long and 24 feet wide. Each rug is 4 feet long and 2 feet wide. She places 7 rugs throughout the lobby. The rugs do not overlap. How much of the lobby's floor is left uncovered by the rugs?
856 feet of the lobby floor is left uncovered. 38*24=912 Solve for the area of the lobby. 4*2*7=56 Solve for how much area is taken up by the 7 rugs. 912-56=856
