Math topic la la ~ ~ ~

According to the area ratio of three rooms. In addition, whether the allocation ratio of management fees should be adjusted depends on the orientation, light and ventilation conditions of the three rooms. For example, you can draw lots to decide which teacher chooses the room first. The first one should be allocated according to the room area ratio multiplied by the coefficient 1.2, the second one should be allocated according to the area ratio multiplied by the coefficient 1. 1, and finally it should be allocated directly according to the area ratio. For example, the area of three rooms is 20, 25 and 30 square meters respectively, the first room is 25 square meters, and the second room is 20 square meters, so the management fee to be shared for the room of 25 square meters is 25 *1.2/(25 *1.2+20 *1.60). Allocation of 20 square rooms: 20 *1.1(25 *1.2+20 *1+30) = 26.8%, allocation of 30 square rooms: 30/(25 * 65438).