Answer:
51 kids
Step-by-step explanation:
Since 7 students had to go in their own cars and 313 students went on a fieldtrip, what we can do is subtract 7 from 313 because we know that the rest of the students are riding the bus and 7 arent and 313 minus 7 is 306.
306 is the number of kids who are riding the bus and we need to know how many kids are in each bus and their is 6 buses so you can do 306 divided by 6 which is 51
so the answer is 51 kids were in each bus!