Question

In a class test (+4)marks are given for every correct answer and (-3) marks are given every incorrect answer and no marks for not attempting any question (1) Radhika sco 20 marks. If she has got 12 correct answers, how many questions has she aftemp incorrectly? (ii) Mohini scores (-5) marks in this test, though she has got correct answ How many questions has she attemnted incom​

Answer 1

Marks for correct answer = +4

Marks for incorrect answer = -3

i)

Questions attempted correctly by Radhika = 12

Marks obtained from the correctly attempted questions = 12 x 4 = 48

Now, we know that her final score = 21

∴ She lost 27 marks due to incorrect answers.

∴ Answers attempted incorrectly = -27/-3 = 9

iI)

Questions attempted correctly by Radhika = 7

Marks obtained from the correctly attempted questions = 7 x 4 = 28

Now, we know that her final score = -5

∴ She lost 33 marks due to incorrect answers.

∴ Answers attempted incorrectly = -33/-3 = 11