File talk:SAT Grid-in mathematics question.png

Answer
3+11 does not 13, it equals 14. And the question is terrible anyways. It's more of an English question than a math question, and the wording doesn't make sense. "determined by multiplying by x": multiplying WHAT by x? Even to a native speaker, this question doesn't make sense. You shouldn't need 3 equations to solve for 2 variables, anyways. Bad question all around.

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It makes sense to me. Each term after the first is done by multiplying by x and adding y. Since it states 'after the first,' and that you must multiply by something, it must be multiplied by the previous number. The answer is indeed 14, but you don't need 3 equations to determine it, I am not sure where you're getting three equations from.

Equation 1: 55*x + y = 176

(176 - y)/55 = x

Equation 2: 176*x + y = 539

(176 * (176 - y))/55 + y = 539

30976/55 - (176/55)y + y = 539

563.2 - 539 = 3.2y - y

24.2 = 2.2y

y = 11

55*x + 11 = 176

x = 3

x + y = 14

98.103.160.18 (talk) 16:24, 22 July 2015 (UTC)

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13. The answer is 13.

You can't have this image on Wikipedia and not let us give the answer. The answer is 13.

--12:43, 25 March 2013 (UTC) — Preceding unsigned comment added by 218.102.34.65 (talk)


 * The answer is indicated in the Summary section. The Anonymouse (talk &#124; contribs) 17:01, 25 March 2013 (UTC)