1. David worked \( 7 \frac{1}{3} \) hours today and planted II trees. It takes him about the same amount of time to plant each tree. How long did it take him to plant each tree? It took him hour to plant each tree.

To find out how long it took David to plant each tree, we first convert \( 7 \frac{1}{3} \) hours into an improper fraction. This can be done by transforming it into \( \frac{22}{3} \) hours. Then, we divide this time by the number of trees, which is 11. So, \( \frac{22/3}{11} = \frac{22}{3} \times \frac{1}{11} = \frac{22}{33} = \frac{2}{3} \). Thus, it took David \( \frac{2}{3} \) hour to plant each tree. He planted each tree in \( \frac{2}{3} \) hours, which is equivalent to 40 minutes. So the next time someone asks how long a task took, remember that breaking it into smaller parts often reveals interesting insights. Time management can become a tree of possibilities!