Question

On Saturday morning the temperature was 76 degrees. The temperature dropped 9 degrees and then rose 13 degrees. How much does the temperature need to rise or fall to return to the initial temperature of 76 degrees?

Answer 1

To find out how much the temperature needs to change to return to the initial temperature of 76 degrees, we can first calculate the adjusted temperature after the changes.

1. Start with the initial temperature:
\[
\text{Initial Temperature} = 76 \text{ degrees}
\]

2. The temperature drops by 9 degrees:
\[
76 - 9 = 67 \text{ degrees}
\]

3. The temperature then rises by 13 degrees:
\[
67 + 13 = 80 \text{ degrees}
\]

Now, we need to determine how much the temperature needs to change to return to 76 degrees from the current temperature of 80 degrees.

4. Calculate the difference:
\[
80 - 76 = 4 \text{ degrees}
\]

Since the temperature is currently 80 degrees and we need to return to 76 degrees, it needs to fall by 4 degrees.

Thus, the temperature needs to **fall by 4 degrees** to return to the initial temperature of 76 degrees.