Case
One financial firm faced a complex problem due to the mistakes of mathematical accumulated since the exit of financial manager of retirement. After that; many problems had been happened related to taxes and funded with many companies and banks. For solving these problems, several committees had been formed without any results, So the company decided to outsource the financial manager himself who had been able to solve the problem within three days After that, he had submitted an invoice for resolving these problems account in the amount of $ 5,000, and when he asked about the actual amount used to accomplish the work during Three days it was $ 500 only Do you have any justification for (S 4,500)