2005 AMC 12B Problems/Problem 4: Difference between revisions
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== Problem == | == Problem == | ||
At the beginning of the school year, Lisa's goal was to earn an A on at least <math>80\%</math> of her <math>50</math> quizzes for the year. She earned an A on <math>22</math> of the first <math>30</math> quizzes. If she is to achieve her goal, on at most how many of the remaining quizzes can she earn a grade lower than an A? | |||
<math> | |||
\mathrm{(A)}\ 1 \qquad | |||
\mathrm{(B)}\ 2 \qquad | |||
\mathrm{(C)}\ 3 \qquad | |||
\mathrm{(D)}\ 4 \qquad | |||
\mathrm{(E)}\ 5 | |||
</math> | |||
== Solution == | == Solution == | ||
Revision as of 21:15, 17 April 2009
Problem
At the beginning of the school year, Lisa's goal was to earn an A on at least 
of her 
quizzes for the year. She earned an A on 
of the first 
quizzes. If she is to achieve her goal, on at most how many of the remaining quizzes can she earn a grade lower than an A?
