Question

On a given morning the temperature was 71°F. The temperature dropped 5°F and then rose 8°F. How much does the temperature need to rise or fall to return to the initial temperature of 71°F?

Answer 1

Explanation:

Temperature needs to fall by 3 degrees

Answer 2

fall 3°

Explanation:

To return to the same value, the sum of rises must be the same as the sum of falls. The temperature must fall 3 °F for the total of falls to be 8 °F, the same as the rise.