In a class test (+3) marks are given for every correct answer and (-2) marks are given to
every incorrect answer and no marks for not attempting any question. (1) Radhika scort
20 marks. If she has got 12 correct answers, how many questions has she attempte
incorrectly? (ti) Mohini scores (-5) marks in this test, though she has got 7 correct answer
How many questions has she attempted incorrectly?
Answers
Answered by
2
Answer:
(i) 8 (ii) 13
Step-by-step explanation:
(i)Marks given for Correct answer= +3
Correct answers given by Radhika= 12
Marks she has obtained from correct answers= 12*3
=36
Marks given for incorrect answer= (-2)
Marks she scored=20
Thus , No of marks she got reduced due to incorrect answers= 36-20= 16
Thus, Incorrect answers she gave= 16/2
=8
Correct answers of Mohini=7
Marks she has obtained from correct answers= 7*3
= 21
Marks she scored=(-5)
Thus , No of marks she got reduced due to incorrect answers= 21-(-5)
=26
Thus, Incorrect answers she gave= 26/2
= 13
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