## SAT Question of the Day

The SAT question of the day is an Algebra question that tests your ability to solve equations.

**Read the question carefully**: In this case you really only have one block of information. You have been given the fact that *a* - *b* = *b *- 3 = 6.

**Identify the bottom line**: * a* = ?

**Assess your options**: You cannot immediately solve for *a*, but you can solve for *b* and then use the value of *b* to solve for *a*.

**Attack the problem**. You know you have to do this problem in two steps, so break up the equation. You know that both parts of the equation equal 6.

*a* - *b* = 6 and * b* - 3 = 6

You can easily solve the second equation by adding 3 to each side.

*b* - 3 = 6

*b* = 9

Now plug the value for *b* back into the first equation that you isolated.

*a* - *b* = 6

*a* - 9 = 6

*a* = 15

Notice that you can solve this problem in seconds without the use of a calculator.

**Loop back**: You solved for your bottom line, *a* (not *b*), so look down at your answer choices.

The correct answer is (D).

On sat.collegeboard.org, 60% of the responses were correct.

## ACT Question of the Day

The ACT question of the day is a Geometry question that has already been addressed on this blog: click here to see an explanation.

To get help preparing for the SAT, PSAT, or ACT exam, check out the Knowsys College Readiness Program.

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