Number of people 60x(5- 1)=240.

220÷45≈4.89 yuan/person

300÷60=5 yuan/person

So try to rent a 45-seat bus, but 45 seats are not just enough for students.

Therefore, we have to rent 60 buses.

45×4+60× 1=240

So we rented four 45-seat buses and 1 60-seat buses. Money =4×220+300= 1 180 yuan.