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# The arithmetic mean (average) of m and n is 50, and the arit

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The arithmetic mean (average) of m and n is 50, and the arit [#permalink]  11 Apr 2019, 16:12
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The arithmetic mean (average) of m and n is 50, and the arithmetic mean of p and q is 70. What is the arithmetic mean of m, n, p, and q?

(A) 55

(B) 65

(C) 60

(D) 120

(E) 130
[Reveal] Spoiler: OA

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The arithmetic mean (average) of m and n is 50, and the arit   [#permalink] 11 Apr 2019, 16:12
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