SOLUTION: A test contains 200 multiple choice questions. The marking rule is designed such that 2 marks are awarded for each correct answer and 1 mark deducted for each wrong answer. If ther
Algebra.Com
Question 1005265: A test contains 200 multiple choice questions. The marking rule is designed such that 2 marks are awarded for each correct answer and 1 mark deducted for each wrong answer. If there are N questions answered correctly by a student, find their final score in terms of N.
Thanks!
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
If the student answers all of the questions:
.
N=number correct
2N=points for correct answers
200-N=number incorrect
Points deducted for incorrect=-1(200-N)=-200+N
F=final score
F=2N-200+N
F=3N-200
This looks strange, but consider:
When he starts, the student has no correct answers, so he loses
1 point for all questions (-200). For each question he answers
correctly (N), he gets 2 points and also does not lose a point
for being incorrect (thus 3 points for each correct answer, or (3N)).
RELATED QUESTIONS
A student is taking a standardized test consisting of multiple choice questions for which (answered by Edwin McCravy)
One of several Extra Credit Questions, I really need them.
Can someone please help?
A (answered by stanbon)
A test is worth 200 points.Th test consist of true and false questions worth 6 points... (answered by robertb)
A Mathematics competition contests of 30 multiple-choice questions. 4 marks are awarded... (answered by Theo)
A student is taking a multiple choice exam in which each question has five choices.... (answered by stanbon)
A test consists of only true/false questions and multiple-choice questions. The... (answered by MathLover1)
Hey, got referred by an army buddy, can a mathematician give some help on a couple... (answered by lynnlo)
Hi guys.
On a certain multiple-choice test, 4 points are awarded for each correct... (answered by josmiceli)
In a multiple choice test, two marks are given for each correct answer and one mark is... (answered by stanbon)