I have 4 columns across the page that my staff needs to enter the number of
minutes they spend on a task. I then want to add the total number of minutes
and convert it to hours:minutes. What formula would I use to get the correct
formatting?

Example:

A1 = 25, B1 = 15, C1 = 45 Total minutes spent = 85 Desired Result is 1:25
(1 hour 25 minutes)