SOLUTION: An exam worth 100 points contains 30 questions. Multiple choice questions are worth 2 points and short answer questions are worth 4 points. How many of each type of question are on

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Question 912565: An exam worth 100 points contains 30 questions. Multiple choice questions are worth 2 points and short answer questions are worth 4 points. How many of each type of question are on the test?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x the number of short answer questions
4x + 2(30-x) = 100
2x = 40
x = 20, number of short answer questions. Multiple choice questions: 10 30-20
and...checking
4%2A20+%2B+2%2A10 = 100points