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Data Sufficiency (DS) | Re: AC is a diameter of the circle and B is a point on the circle. ACD is

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Bunuel wrote:

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AC is a diameter of the circle and B is a point on the circle. ACD is a straight line. What is the value of x?

(1) AB = BC
(2) x = 2y


[Reveal] Spoiler:


I think the ănswer is C. We can deduce from the question that 3d^ + a^ = 180, 2a^+ d^ = 180 -> a^ = x = 72
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