In a competitive exam each question carries 4
marks but for wrong answer (+2) marks are
deducted and 0 mark is given for questions
not attempted. In all there are 25 questions.
Calculate the marks scored by each student.
(1) StudentA: 16 correct and 9 wrong.
(2) Student B: 8 correct, 7 wrong and rest
questions not appeared.
(3) StudentC: 7 correct and 18 wrong.
(4) Student D: 10 correct and 10 wrong
and rest not appeared.
(5) Student E: 10 correct rest not appeared.
Answers
Answer:
student A - 46
student B - 18
student C - -4
student D - 20
student E - 40
Step-by-step explanation:
each correct answer carries marks - 4
each in correct answer carries marks - 4
student A - correct answers - 16
incorrect answers - 9
total answers attempted - 25
correct answer - 16 × 4 = 64
incorrect answers - 9 × 2 = 18
64 - 18 = 46, student A scored 46
student B - correct answer 8
incorrect answers 7
total answers attempted 17
correct answer 8×4 = 32
incorrect answers 7×2 =14
32-14 = 18
student C - correct answer - 7
incorrect answers - 18
total answers attempted -25
correct answer - 7×4= 28
incorrect answers - 18 × 2 =32
28 - 32 = -4
student D - correct answer - 10
incorrect answers - 10
total answers attempted - 20
correct answer - 10×4 =40
incorrect answers - 10 × 2 =20
40- 20 = 20
student E - correct answer - 10
incorrect answers - o
total answers attempted - 10
correct answer - 10×4 =40
incorrect answers - 0×2 =0