The officers of a high school senior class are planning to rent buses and vans for a class trip. Each bus can transport 60 ​students, requires 3 chaperones, and costs ​$1200 to rent.

 The officers of a high school senior class are planning to rent buses and vans for a class trip. Each bus can transport 60 ​students, requires 3 chaperones, and costs ​$1200 to rent. Each van can transport 12
 students, requires 1​ chaperone, and costs ​$150 to rent. Since there are 900 students in the senior class that may be eligible to go on the​ trip, the officers must plan to accommodate at least 900 students. Since only 51parents have volunteered to serve as​ chaperones, the officers must plan to use at most 51chaperones. How many vehicles of each type should the officers rent in order to minimize the transportation​ costs? What are the minimal transportation​ costs?

 

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