Number of boxes
Algebra
Level
2
20cm x 20cm tiles are to be installed in a rectangular floor 4m x 3m. One box of tiles contains 40 tiles. What is the minimum number of boxes of tiles to be purchased?
The answer is 8.
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1 solution
no. of tiles = (3 x 4)/(0.2 x 0.2) = 300 tiles
no. of boxes = 300 tiles (1 box/40 tiles) = 7.5 boxes or 8 boxes since we cannot buy 1/2 box