40 rooms in the hotel earn 65,438+0 million a year.

This problem needs more information to make an accurate calculation. Here are some possible calculation methods:

1. Assuming that the average house price is 100 yuan/night and the daily occupancy rate is 80%, the annual income of each room is 100 yuan/night *80%*365 days = 29,200 yuan. The total income of 40 rooms is 29,200 yuan/room *40 rooms = 1, 1 68,000 yuan, exceeding1ten thousand yuan.

2. Another calculation method is that if the daily rental price of each room is 300 yuan and the occupancy rate is 60%, the annual income of each room is 300 yuan/night *60%*365 days = 65,700 yuan. The total income of 40 rooms is 65, and 700 yuan/room *40 rooms = 2.628 million yuan, exceeding 6.5438+0 million.

Finally, whether you can earn 654.38+0 million depends on the cost and profit rate of the hotel. If the hotel has low operating cost and high profit rate, it may earn more than 654.38+0 million by renting rooms at low prices; If the cost is high and the profit rate is low, it may be necessary to raise the house price or increase the number of rooms in order to reach the income target of 654.38+100,000.

In a word, more information is needed to calculate this problem accurately.