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# If a, b, and c are three different numbers and ax : by : cz

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If a, b, and c are three different numbers and ax : by : cz [#permalink]  13 Apr 2019, 06:29
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If a, b, and c are three different numbers and ax : by : cz = 1 : 2 : –3, then ax + by + cz =

(A) 0

(B) $$\frac{1}{2}$$

(C) 3

(D) 6

(E) 9
[Reveal] Spoiler: OA

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If a, b, and c are three different numbers and ax : by : cz   [#permalink] 13 Apr 2019, 06:29
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