We can see that there are sets of grids which each set contains grids. We can see one of the set has all of its grids shaded. We can also see that the other set has its grids shaded. The ratio of all the total shaded grids of the sets to the number of grids of set is which we can write it in Decimal as .
We know that the product of and is also . So, is the product that matches the shading on grids.
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