Given that the mean of three values is 4x and two of those values are $3x – 2y$ and $2x + y$ , what is the third value expressed in terms of x and y?

Correct answer marked below

2x+y

2x-y

7x + y

Correct

12x

8x

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Official Explanation

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Let the third value be B. According to the problem: => (3x-2y +…

Comments

KalyanApr 28

got it, thanks for the clear setup

What this question tests

Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.

Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.