Joe's bathroom floor is 5 feet wide and 8 feet long. he will cover the floor with 3- inch square tiles. how many tiles does he need?

So first find area
area=legnth times width
5=width
8=legnth
5 times 8=40

area=40
3 area times x number of tiles=40
divide both sides by 3
x=40/3
x=13 and 1/3
since you can't buy 1/3 tiile
round up
x=14

answer is 14

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