The guest room department of a hotel has triple rooms and double rooms. The charging data is as follows. In order to attract tourists, a 50% discount for group stays is implemented. A 50 person

Explanation: Suppose X people live in the three-person ordinary room, then (50-X) people live in the double ordinary room

According to the meaning of the question, we get 150*0.5* X\3 140*0.5*(50-X)\2=1510

The solution is X=24, 50-X=26

And 24 and 3=8, 26 , 2=13 rooms

Answer: There are 8 or 13 rooms in ordinary triple rooms and ordinary double rooms respectively