Question

there are 158 4th grade students and 139 fifth grade students going on a field trip .there needs to be at least 1 adult chaperone for evrey 8 students .

Answer 1

(D) is the best explanation

Explanation:

The total number of students is 158 + 139 = 297. This number can be rewritten as ...

297 = 37 × 8 + 1

That is, if there were 37 chaperones, 1 student would remain without a chaperone. That means the number of chaperones must be increased by 1 to 38. This is best explained by choice D.