Question

There are 33 questions on Allison's English test. The multiple choice questions are worth 2 points each. And short answer questions are worth 5 points each. The entire test is worth 120 points.
Let multiple question be x. And short answers be y. How many short answer questions are on the test?

Answer 1

x+y=33
2x+5y=120
Solve the system

Answer 2

x=15
y=18

Answer 3

So 18?

Answer 4

yep