Algebra Equations: Solve

Mathematics: Standard Multiple Choice

Read the following SAT test question and then select your answer. 
If  , then Q=
Read the question carefully and note the bottom line at the top of your scratch work. The nice thing about short questions like this is that they make the first two steps of the Knowsys Method absolutely effortless. At the top of your scratch work, write Q=?

Next, assess your options. What could I do? What should I do? The two most obvious choices here are to work backwards by plugging in the answers or to rearrange the equation to solve for Q. It will be faster on this problem to solve for Q.
Obviously, you can combine like terms here to give you 66Q=6

Next, to isolate Q, divide both sides by 66.

Reduce the fraction to its lowest terms. 

(C) 10
(D) 11
(E) 20

A is the correct answer.

80% of those who attempted this question at got it right.

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