Create a budget for the European History eBook project. a) What are the costs by major phases of work for making this European History eBook?
b) What are the total costs for direct labor?
c) What is the total estimated cost of this European History eBook?

The gross income is $3600,
Minus the vacancy rate, 3600 × 0.95 = 3420
Minus the monthly expenses ; 3420 - (8640/12)
                                                =  2700
Since, He is expecting a return of 12 %, then,
   2700  divided by 0.12 (12%)
   = $ 22,500, would be the value he should pay for this building.