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in Pre-Algebra Answers by Level 10 User (57.4k points)

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2 Answers

Since all the grids have 100 squares, which grid has all squares shaded? And which grid has 40 (4 columns) shaded? This add up to 100+40=140. The answer, of course, is C+D (last answer). None of the others have enough shaded squares.

by Top Rated User (1.1m points)
it is the last one your welcome :)
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