Question

Which equation represents the number of test questions in the problem

below?
A test is worth 60 points. Multiple-choice questions are worth 2 points, and
short-answer questions are worth 5 points. If the test has 15 questions, how
many multiple-choice questions are there?
O A. m+ s = 60
O B. 2m + 5s = 15
O c. m:s= 15
O D. m + s = 15

Answer 1

The answer is D, but it's not a very good question. See below.

Explanation:

Let the number of multiple choice questions = m

Let the number of short answer questions = s

The total number of questions is 15 so

m + s = 15

The test is worth 60 points

2*m + 5*s = 60

Both A and B would be correct if the 60 and 15 are interchanged. As it is, the only thing you can use is D. But that is not enough to get you the answer. You need the second equation I have listed and as I have written it.