Difference between revisions of "2010 AMC 10B Problems/Problem 12"

Latest revision as of 20:40, 26 May 2020

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-The minimum possible value occurs when 20% of the students who originally answered "No." answer "Yes." In this case, x=20
+#redirect [[2010 AMC 12B Problems/Problem 6]]
-The maximum possible value occurs when 30% of the students who originally answered "Yes." answer "No." and the 50% of the students who originally answered "No." answer "Yes." In this case, x=50+30=80
-Subtract 20 from 80 to obtain an answer of <math>\boxed{\mathrm {(D)} 60}</math>