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Backsolving involves inserting one of the five answer choices into
the variables in the question. You obviously cannot use this on Data Sufficiency questions (where there are no answer choices).
When to Backsolve
- Want to to double check an answer? Backsolve your answer choice and see if it works. This is where Backsolving is most effective.
- You are completely stumped and you don't know what to do. Start plugging in answer choices and hope you get lucky! Even glancing at the answer choices may give you a concept of where the question is going and if you are on the right track. Note: try plow and playing with the numbers before backsolving.
- Sometimes you can use Backsolving to skip complicated algebra by substituting the numbers instead of trying to solve for the variables.
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