1953 AHSME Problem 1

A boy buys oranges at 3 for 10 cents. He will sell them at 5 for 20 cents. In order to make a profit of 1.00$, he must sell:

\textbf{(A)}\ 67 \text{ oranges} \qquad \textbf{(B)}\ 150 \text{ oranges} \qquad \textbf{(C)}\ 200\text{ oranges}\\ \textbf{(D)}\ \text{an infinite number of oranges}\qquad \textbf{(E)}\ \text{none of these}

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.