2/3 is the simplest form which represents the tiles that are blue.
A fraction represents a part of a whole.
Given that Judy uses 12 tiles to make a mosaic.
Eight of the tiles are blue
We need to find the fraction in simplest form to represents the tiles that are blue
As 12 are the total number of tiles which can be taken in the denominator
8 blue tiles are part of the whole tiles
So we have to divide 8 by 12
8/12
as 8 and 12 are multiples of 4
2/3
Hence, 2/3 is the simplest form which represents the tiles that are blue.
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