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Mathematics 21 Online
OpenStudy (anonymous):

Robert sharpened pencils for the school math contest. He sharpened 8 pencils in 2 minutes and 32 pencils in 8 minutes. If he continues at the same rate, which equation can be used to predict the number of pencils he can sharpen in 30 minutes? Let p represent the number of pencils and t represent the number of minutes. A. p + t = 30 B. 4t = p C. 8p = 3t D. t/p = 4

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