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What is the average of a, b, and c? (1)2a + 3b + 5c = 42 (2)4a + 3b + c = 30

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What is the average of <em>a, b</em>, and <em>c</em>? (1)2<em>a</em> + 3<em>b</em> + 5<em>c</em> = 42 (2)4<em>a</em> + 3<em>b</em> + <em>c</em> = 30






 
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