| Ø | Click on the Equations tool and enter the following equations and units of measurement for each variable that appears black in the view (the others already have equations entered). |
sales=new customers * widgets per person
Units: widget/Month
price=50
Units: dollar/widget
sales revenue=sales * price
Units: dollar/Month
| Ø | When you click on Cumulative Revenue to write its equation, click on the check box marked Supplementary. This tells Vensim that the variable is not used anywhere else. |
| Cumulative Revenue = INTEG( |
| sales revenue, |
| 0) |
Units: dollar
| Ø | Select File>Save (or press Ctrl + S). |
