To calculate the percentage increase in rent, you can use the following formula:
\[ \text{Percentage Increase} = \left( \frac{\text{New Rent} - \text{Old Rent}}{\text{Old Rent}} \right) \times 100 \]
Here, the old rent is $700 and the new rent is $735. Plugging in these values:
\[ \text{Percentage Increase} = \left( \frac{735 - 700}{700} \right) \times 100 \]
Calculating the difference:
\[ 735 - 700 = 35 \]
Now, substituting this back into the formula:
\[ \text{Percentage Increase} = \left( \frac{35}{700} \right) \times 100 \]
Now, calculating the division:
\[ \frac{35}{700} = 0.05 \]
Finally, multiplying by 100 to get the percentage:
\[ 0.05 \times 100 = 5 \]
Therefore, the percentage increase in rent is 5%.