John works 40 hours a week managing his own business, without drawing a salary. He could be earning $600 a week doing the same

·         John works 40 hours a week managing his own business, without drawing a salary. He could be earning $600 a week doing the same job for his former employer. He has invested $100,000 of his own money in his business and owes the bank $100,000.  The interest on his bank debt is $200 a week. If John's accounting  profit is $1,000 per week, what is his weekly economic profit?