1976 AHSME Problem 13

If x cows give x+1 cans of milk in x+2 days, how many days will it take x+3 cows to give x+5 cans of milk?

\begin{array}{l} \textbf{(A) }\frac{x(x+2)(x+5)}{(x+1)(x+3)}\qquad \textbf{(B) }\frac{x(x+1)(x+5)}{(x+2)(x+3)}\qquad\\ \textbf{(C) }\frac{(x+1)(x+3)(x+5)}{x(x+2)}\qquad \textbf{(D) }\frac{(x+1)(x+3)}{x(x+2)(x+5)}\qquad \\ \textbf{(E) }\text{none of these} \end{array}

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