Answer:
Number of rooms reserved for the students are - 90 .
Explanation:
Firstly ,
As we know 60% of the 600 students went on the trip,
Then ,
Number of students went on the trip = 60% of 600
=

= 360
Now ,
Given - One room is reserved for 4 students ,
Therefore , Number of rooms for 360 students =

= 90
Hence , the answer is 90 rooms reserved for the students.