6. A computer company has two manufacturing plants, one in Rochester and one in Queens. Transporting a computer from Rochester to the retail outlet takes 15 hours and costs $15, while transporting a computer from Queens to the retail outlet takes 20 hours and costs $30. The profit on each computer manufactured in Rochester is $40, and the profit on each computer manufactured in Queens is $30. The Rochester plant has 80 computers available, and the Queens plant has 120 computers available. If there are 2100 hours and $3000 allotted for transporting the computers, how many computers should be sent to the retail outlet from each of the two plants to maximize the company’s profit?