Final answer:
To find the temperature percentage change from 9 am to 11 am, we calculate the change in temperature and divide it by the original temperature at 9 am, then multiply by 100 to get the percentage. The temperature increased by approximately 55.56 percent.
Step-by-step explanation:
The question involves calculating the percentage of temperature change between 9 am and 11 am. To find this, we use the formula for percentage change: Percentage Change = (Change in Value / Original Value) × 100. In this case, the change in temperature is the difference between the temperature at 11 am (70 degrees) and the temperature at 9 am (45 degrees).
Step 1: Calculate the difference in temperature.
Temperature at 11 am - Temperature at 9 am = 70 degrees - 45 degrees = 25 degrees.
Step 2: Calculate the percentage change.
Percentage Change = (25 degrees / 45 degrees) × 100 = 55.56%
Therefore, the temperature increased by approximately 55.56 percent from 9 am to 11 am.