Ahmad is a buyer for Al-Maktabeh a publishing company. His job is to purchase supplies and services for the printing of technical manuals. His brother sets up a printing company, and Ahmad hires him to print most of these manuals for Al-Maktabeh. However, rather than actually printing the manuals, his brother hires another printer to do the work, then sells the printed manuals to Al-Maktabeh at a 50% markup. As a result, his prices are much higher than the other printers who serve Al-Maktabeh. What time of scheme is this explain your