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2009 AMC 8 Problems/Problem 11

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The Amaco Middle School bookstore sells pencils costing a whole number of cents. Some seventh graders each bought a pencil, paying a total of $&#036;1.43$. Some of the $30$ sixth graders each bought a pencil, and they paid a total of $&#036;1.95$. How many more sixth graders than seventh graders bought a pencil?


$\textbf{(A)}\ 1 \qquad \textbf{(B)}\ 2 \qquad \textbf{(C)}\ 3 \qquad \textbf{(D)}\ 4 \qquad \textbf{(E)}\ 5$

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