SOLUTION: in a quiz program right answer gets 2 mark each. wrong answer gets 1 mark deducted. there are total 50 questions. if a student gets 76 marks. how many questions are right? find the

Question 1012398: in a quiz program right answer gets 2 mark each. wrong answer gets 1 mark deducted. there are total 50 questions. if a student gets 76 marks. how many questions are right? find the answer in linear equation method
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
R=number of right answers; W=number of wrong answers
.
R+W=50
R=50-W
.
Total score = 2R-W
76=2R-W
76=2(50-W)-W
76=100-3W
-24=-3W
8=W
ANSWER 1: There are 8 incorrect answers.
.
R=50-W=50-8=42
ANSWER 2: there are 42 correct answers.
.
CHECK:
2R-W=76
2(42)-8=76
84-8=76
76=76

RELATED QUESTIONS
there are 6 MC questions in a short quiz and 5 options are given for each question. 2... (answered by vleith)

In a multiple choice test, two marks are given for each correct answer and one mark is... (answered by stanbon)

A test contains 200 multiple choice questions. The marking rule is designed such that 2... (answered by macston)

In an exam there is 4 marks for a right answer but 2 marks will be deducted for a wrong... (answered by jorel555)

In an examination a student scores 1 mark for each correct answer and 0.25marks are... (answered by tommyt3rd)

There are 18 questions in a math competition. The scores of each question are allotted in (answered by ikleyn)

I have 40 questions, 4 marks given for a correct answer, 2 marks deducted for each wrong... (answered by Ani_g)

In a exam there are 50 question.each correct answer fetches 1 mark whereas for each wrong (answered by ramkikk66)

Hi In a maths quiz containing 10 questions 4 points are awarded for each correct answer... (answered by ikleyn,greenestamps)