Hi,
What you want to do is divide by 60. The whole number you get will be your hours and the remainder will be your
minutes.
Based on the example you provided, your formula could look like this:
numbervar x := .75;
numbervar hh := truncate(x * 100/ 60);
numbervar mm := remainder(x * 100,60);
totext(hh,0,"") + ":" + totext(mm,0,"")