The attached example shows how you can do it in Word without Excel. It uses content controls and allows you to change the daily allowance or cost per bag and the other values recalculate with a macro as you leave the content control.
The code included in the file looks like this
Code:
Private Sub Document_ContentControlOnExit(ByVal aCC As ContentControl, Cancel As Boolean)
Dim iAmt As Long, iPrice12 As Long, iPrice4 As Long, iDays12 As Long, iDays4 As Long
Dim iDailyCost12 As Long, iDailyCost4 As Long
Select Case aCC.Title
Case "Daily Amount", "BagCost12", "BagCost4"
iAmt = ActiveDocument.SelectContentControlsByTitle("Daily Amount").Item(1).Range.Text
iPrice12 = ActiveDocument.SelectContentControlsByTitle("BagCost12").Item(1).Range.Text
iPrice4 = ActiveDocument.SelectContentControlsByTitle("BagCost4").Item(1).Range.Text
iDays12 = 12 * 1000 / iAmt
ActiveDocument.SelectContentControlsByTitle("Days12")(1).Range.Text = Format(iDays12, "#,###")
iDays4 = 4 * 1000 / iAmt
ActiveDocument.SelectContentControlsByTitle("Days4")(1).Range.Text = Format(iDays4, "#,###")
iDailyCost12 = 100 * iPrice12 / iDays12
iDailyCost4 = 100 * iPrice4 / iDays4
ActiveDocument.SelectContentControlsByTitle("Daily12")(1).Range.Text = Format(iDailyCost12, "#,###")
ActiveDocument.SelectContentControlsByTitle("Daily4")(1).Range.Text = Format(iDailyCost4, "#,###")
End Select
End Sub