AMC 12B 2011 Problem 7

Past Contests AMC 12 AMC 12B - 2011
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1

Let x and y be two-digit positive integers with mean 60 . What is the maximum value of the ratio \dfrac{x}{y} ?

Answer Choices
A. 3
B. \dfrac{33}{7}
C. \dfrac{39}{7}
D. 9
E. \dfrac{99}{10}