Answer:
[tex]\frac{2}{3}[/tex]in
Step-by-step explanation:
4in is the total so if it takes 6 hours. divide 4 by 6 and you get [tex]\frac{2}{3}[/tex].
Fast way to do this is to write out 4/6 and see they both can divide by 2. then you have the fraction in simplest form.