It is also possible to make a choice in the settings in which form to display the time as "0.5 (fractions)" or as "0:30 (usually)".
Each user will choose what is more convenient for him.
However, I think the "0:30 (usually)" format is the best choice.
For example, it's 30 minutes now, displayed as «0,5». It will be much more convenient if 30 minutes is displayed everywhere as 0:30.
For example in these places:
It is also possible to make a choice in the settings in which form to display the time as "0.5 (fractions)" or as "0:30 (usually)". Each user will choose what is more convenient for him. However, I think the "0:30 (usually)" format is the best choice.