Answer:
18 vans are needed. 5 students will ride in the van that isn't full
Explanation:
I know this because first, you divide the number of students going in the vans(7) by the total number of students(131).
Work:
131 = 18.71 (it has more decimals but you just keep the 18)
7
After you divide those numbers you will get 126 which is the number of students going in the the full vans. Then, you subtract the number of students going in the full vans by the number of total students, which gives you the answer of 5 meaning that there are going to be 5 students in another van.