Airplane leases. A corporation wants to lease a fleet of 12 airplanes with a combined carrying capacity

Question:

Airplane leases. A wants to lease a fleet of 12 airplanes with a combined carrying capacity of 220 passengers. The three available types of planes carry 10,15, and 20 passengers, respectively. How many of each type of plane should be leased?
Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...