Question

What system of equations would you use to solve the problem below?
A test is worth 30 points. Multiple-choice questions are worth 1 point and short-answer questions are worth 2 points. If the test has 20 questions, how many multiple choice questions are there?
A. m+s=20
m+2s=30
B. m*s=20
m*2s=30
C. m+s=3
m+2s=50
D. m+s=30
m+2s=20

Answer 1

10 multiple choice questions ..
option A
..
this is how u this
its kind of linear equation in two variable..

Answer 2

m=10 ,s= 10

Answer 3

thank u.

Answer 4

:)