Here you go:
SELECT Resourcing.Project_Title, Resourcing.Start_Date, Resourcing.End_Date, Resourcing.Time, Resourcing.Trainer_Name, Resourcing.Training_Type, dhCountWorkdaysA([Start_Date],[End_Date]) AS [Work Days], Resourcing.Activity, IIf([Time]="All Day",[Work Days]*7.4,[Work Days]*3.7) AS...