Urban Community College is planning to offer courses in Finite Math, Applied Calculus, and Computer Methods. Each section of Finite Math has 40 students and earns the college $40,000 in revenue. Each section of Applied Calculus has 40 students and earns the college $60,000, while each section of Computer Methods has 10 students and earns the college $30,000. Assuming the college wishes to offer a total of seven sections, accommodate 220 students, and bring in $300,000 in revenues, how many sections of each course should it offer?