Last week's solution has been posted HERE.
A university analyst has been asked to help with course and classroom resource planning. The university sends course times in military time format. The university analyst wants the fields Military Begin Time and Military End Time to display in standard, 12-hour increments. So, if a course ends at 16:30, he would like it to show as 4:30. He also wants to know what the elapsed time is between the two fields mentioned above. How long is each course? Minutes will be the time unit measured.
After seeing the error in my ways, I've read the instructions and completed my homework assignment.
My one-tool (plus a Select) solution!
PS. I took the liberty of adding some extra "data validation" to my answers, since there were a few unusual entries... For example: University students have a hard enough time keeping track of class times without worrying whether the start time is listed as after the end time...
Here's the route I went down.
Very very similar solution to @BenMoss