Question

1. Mr. Xavier took his 18 students and 9 other chaperones to an amusement

Answer 1

The answer is D. For Mrs Yadira's class there are 11s 4c and 489 in total.

Answer 2

Given that number of students taken by Mr. Xavier = 18

Let admission fee per student = $s

Then total charge of students = 18s

Given that number of chaperones taken by Mr. Xavier = 9

Let admission fee per chaperones = $c

Then total charge of chaperones = 9c

Then total fee paid by Mr. Xavier = 18s+9c

which is equal to fee paid $882

So we get equation 18s+9c=882

Same way we can create equation for fee paid by Mrs. Yadira

which is 11s+4c=489

This equation can be added to the previous equation in order to solve for unknown variables s and c.

Hence final answer is D. 11s + 4c = 489