Question

In 12 hours, the temperature fell steadily from 17°F to 7°F. What was the average change in temperature per hour? ​

Answer 1

In 12 hours, the temperature went from 17 degrees to 7 degrees.

17-7 = 10

10 degree temperature drop in 12 hours.

10/12=temperature drop per hour

8.333 (continuing) degree drop per hour

Answer 2

The temperature fell 5 °F per every six hours, which is approximately 0.83 °F per hour.

Explanation:

Givens

• The temperature fell from 17 °F to 7°F, in 12 hours.

When the problem says "steadily", it means that the temperature is falling down in a linear way.

Now, to find the rate between temperature and time, we just need to divide the difference of temperature and the number of hours,

`r=(\Delta T)/(h)=(7-17)/(12)=(-10)/(12) =-(5)/(6)\approx -0.83`

Therefore, the temperature fell 5 °F per every six hours, which is approximately 0.83 °F per hour.