Question 46425
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One day, the temperature at 2:00 A.M. was 43°F, and by 3:00 P.M. the temperature was 56°F. 
What was the hourly rate of temperature change?
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        The solution in the post by  @consc198  is  FATALLY  WRONG,

        since  @consc198  did not take a labor to read the problem and to think on its meaning.


        For a correct solution see what follows.



<pre>
The time interval from 2:00 AM to 3:00 PM is 13 hours.


Therefore, the hourly rate of the temperature change this day is (based on given data)

    {{{(56-43)/13}}} = {{{13/13}}} = 1 degree Fahrenheit per hour.
</pre>

Solved correctly.