Given:
Total number of senior students = 600
60% went on the senior trip.
One room was reserved for every 4 students.
To find:
The total number of reserved rooms.
Solution:
60% went on the senior trip from total 600 students. So, number of students who went on tripe is
[tex]600\times \dfrac{60}{100}=360[/tex]
Now, one room was reserved for every 4 students. So,
[tex]\text{Required number of rooms}=\dfrac{\text{Number of students who went on tripe}}{\text{Number of students in room}}[/tex]
[tex]\text{Required number of rooms}=\dfrac{360}{4}[/tex]
[tex]\text{Required number of rooms}=90[/tex]
Therefore, the required number of reserved rooms were 90.