Luke has 1/2 pint left
The pints he has left is the difference between the amount of pints he had and the pints he used
Pints left = pints Luke had - pints Luke used
Pints Luke used = [tex]\frac{25}{10}[/tex] x [tex]\frac{4}{5}[/tex] = 2 pints
Pints left = [tex]\frac{25}{10}[/tex] - 2
[tex]\frac{25}{10}[/tex] is an improper fraction and can be simplified to a mixed fraction
= [tex]2\frac{1}{2}[/tex] - 2 = [tex]\frac{1}{2}[/tex]
To learn more about fractions, please check:
https://brainly.com/question/11664473?referrer=searchResults
