A rectangular kitchen floor measures 15 feet by 17 feet. A stove on the floor has a rectangular base measuring 3 feet by 4 feet, and a refrigerator covers a rectangular area of the floor measuring 4 feet by 5 feet. How many square feet of tile will be needed to cover the kitchen floor not counting the area used by the stove and the refrigerator?
First, calculate the total area of the kitchen floor:
Area = 15 feet * 17 feet = 255 square feet
Next, calculate the total area covered by the stove and refrigerator:
Stove area = 3 feet * 4 feet = 12 square feet
Refrigerator area = 4 feet * 5 feet = 20 square feet
Total area covered by stove and refrigerator = 12 square feet + 20 square feet = 32 square feet
Subtract the area covered by the stove and refrigerator from the total kitchen floor area to find the area needing tile:
255 square feet - 32 square feet = 223 square feet
Therefore, 223 square feet of tile will be needed to cover the kitchen floor not counting the area used by the stove and refrigerator.