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# Percent Equation to Find the Base b

## Solve "x is y percent of what number?"

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Use the Percent Equation to Find the Base, b

Learn to use the percent equation to find part b.
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## Percent Equation to Find the Base, b

Explains how to find the base number when you know a percent.
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