How do you write an equation for mary covered her kitchen floor with 10 tiles. the floor measures 6 ft long by 5 feet wide. the tiles are each 3 ft long and w feet wide.

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.