Question: Can this be improved?

I am working on a simple set of notes for students. Much of the on-line stuff is either out-of-date or too complex.

Here is the problem I wish to show

A corpse was found in a room with an ambient temperature of 64°F. The body temperature on finding the corpse was 75°F; one hour later it was 73°F. Use Newtons Law of cooling to find the time of death.

Here is my solution. I realise the assignment to variable cool is not used. Please tell me any suggestions for improvements.

many thanks


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