Here is the question: Julie is putting tile floor in her kitchen.Twelve square feet of tile costs $7. Julie's kitchen is 9 feet wide and 16 feet long. How much will Julie spend on the tile?
Total sq fit of kitchen is 9x16 =144sq fit 12sq fit = $7 1sq fit = $(7/12) 144sq fit = $(7/12) x 144= $ 84
The kitchen is 9 ? 16 = 144 sq ft, and since 144 = 12 ? 12 she needs 12 groups of twelve square feet. So it would cost 12 ? $7