SOLUTION: Todd uses 21 white tiles and some black tiles to make a mosaic.the mosaic has a total area of 144 square centimeters. Each tile has an area of 3 square centimeters. How many black

Question 1069750: Todd uses 21 white tiles and some black tiles to make a mosaic.the mosaic has a total area of 144 square centimeters. Each tile has an area of 3 square centimeters. How many black tiles did Todd use?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The total number of tiles is:

-----------------------------
white tiles have a total
of cm2
-----------------------------
The remaining area is:
cm2
-----------------------------

There are 27 black tiles
------------------------------
check:
tiles total
OK

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