SOLUTION: Hi guys.
On a certain multiple-choice test, 4 points are awarded for each correct answer, and 2 points are deducted for each incorrect or unanswered question. Sally received a t
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Question 971626: Hi guys.
On a certain multiple-choice test, 4 points are awarded for each correct answer, and 2 points are deducted for each incorrect or unanswered question. Sally received a total score of 84 points on the test. If the test has 30 questions, how many questions did Sally get correct on the test?
Ive manually tried it and I came to the answer of 24. Is there a mathematical equation to solve this?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of correct answers
= number of incorrect or unanswered questions
-------------------
Sally got 24 correct
-------------------
check:
OK
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