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Setting Up Equations: Don’t Double Count

When you’re setting up (and perhaps solving) an equation based on a word problem, sometimes the trick of the question is avoiding double counting.

Typically you’ll see this in problems dealing with money and different “tiers” of payments. The following problem will illustrate this, so give it a shot before watching the video.

NOTE: This problem comes from an Old SAT Math section, but the concepts and strategies for solving it are applicable to New SAT Math and ACT Math questions.


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