SOLUTION: I need help solving this word problem we are to use a system of linear equations to solve the problem. Your teacher is giving you a test worth 100 points containing 40 questions

Question 294907: I need help solving this word problem we are to use a system of linear equations to solve the problem.
Your teacher is giving you a test worth 100 points containing 40 questions. There are two-point questions and four-point questions on the test. How many of each type of question are on the test?
Please help this is really important!! thanks
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
We have two unknowns. number of 2 point and 4 point questions.
t +f=40
t=40-f
2t+4f=100
substitute 40-f for t
2*(40-f)+4f=100
f=10 and t=30

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