If we assume the number of polo shirts have been sold is x, the number of casual shirts have been sold will be 4x. x*18+4x*9=$1080 (18+36)x=$1080 54x=$1080 x=20
The number of casual shirts have been sold is 4*20=80
<span>Marcus wants to carpet his clubhouse. One side of the rectangular floor measures 11 feet. Another side measures 8 feet. How many square feet of carpet does Marcus need to completely cover the floor? : 88</span>
