A 9 by 15 kitchen floor is to be tiled with 4 square tiles E

A 9\' by 15\' kitchen floor is to be tiled with 4\'\' square tiles. Estimate the number of tiles this will require.
How many tiles will it take to tile the kitchen floor?

Solution

1\'=12\"

9\'=12*9\"=108\"

15\'=12*15\"=180\"

Area of the kitchen floor=108*180 sq.inch=19440 sq.inch

side of square tile=4\"

Area of square tile=4^2=16sq.inch

number of tiles required=area of kitchen floor/area of square tile=19440/16=1215