Free SAT Practice Question

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ID: SAT-MATH-GT-045
Section: SAT Math - Geometry & Trigonometry (G&T)
Topic: Lines, angles, and triangles
Difficulty level: Medium

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In triangle \(ABC\), side \(BC\) is extended beyond \(C\) to a point \(D\), forming exterior angle \(ACD\). The exterior angle \(ACD\) measures \((4x+30)^{\circ}\), and the interior angles at \(A\) and \(B\) measure \((2x+40)^{\circ}\) and \((x+10)^{\circ}\), respectively. What is the measure, in degrees, of angle \(B\) ?

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