Answer:
To determine how many lawns Jenny needs to mow to buy tickets costing $65, we need to first calculate how much more money she needs beyond the $25 she already has.
1. **Calculate the additional amount needed:**
\[
\text{Total cost of tickets} - \text{Current money} = 65 - 25 = 40\ \text{dollars}
\]
2. **Determine the number of lawns to mow:**
Jenny earns $10 for each lawn mowed. To find out how many lawns she needs to mow to make up the additional $40, divide the needed amount by the money earned per lawn:
\[
\text{Number of lawns} = \frac{\text{Additional money needed}}{\text{Money earned per lawn}} = \frac{40}{10} = 4\ \text{lawns}
\]
Jenny needs to mow **4 lawns** to earn enough money to buy the tickets.
Step-by-step explanation:
