Problem
()) Isaiah takes 25 hours to treat 75 lawns with organic fertilizer at a housing complex. The lawns in the complex are the same size. (1) At this rate, how many hours will it take Isaiah to treat 9 lawns that are about the same size? Complete the table. \begin{tabular}{|l|c|c|} \hline & + \\ \hline Lawns & 75 & 9 \\ \hline Time (h) & 25 \\ \hline \end{tabular}
Solution
Step 1 ：\text{Find the rate per lawn:} \frac{25}{75}
Step 2 ：\text{Calculate time for 9 lawns:} \frac{25}{75}\times 9
Step 3 ：\text{Reduce the expression:} \frac{25}{75}\times 9 \Rightarrow \frac{1}{3}\times 9 \Rightarrow 3
