A Hotel Has Rooms with Two Double Beds, Two Queen-Size

Essay

A hotel has rooms with two double beds, two queen-size beds, and one king-size bed. The room with two double beds rents for $87; the room with two queen-size beds rents for $93, and the room with a king-size bed rents for $108. The number of rooms with two queen-size beds is five more than twice the number of rooms with two double beds. The number of rooms with a king-size bed is five less than the number of rooms with two double beds. If all 140 rooms are rented, the total revenue is $13,260. Find the number of rooms for each type.