Mitch has already run 16 miles on his own, and he expects to run 1 mile during each track practice. How many track practices would it take for Mitch to run 23 miles?practices.

If he expects to run 1 mile during each track practice, the ratio of speed would be 1 mile per track. Knowing this, we just have to divide to find the answer.
[tex]\frac{23}{1}=23[/tex]