In a class test (+3)marks are given for every correct answer and (-2) marks are given for incorrect answer and no marks for not attempting any question. (i) Radikha scored 20 Marks.if she has got 12 correct answers, how many questions has she attempted incorrectly? Mohini scores -5 Mark's in this test, though she has got 7 correct answers.How many questions has she attempted incorrectly?
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Step-by-step explanation:
Radhika - 20 marks
correct answer 12
marks for correct answer is 12*3= 36 marks for correct answers
marks for incorrect answers =36-20=16. 16 marks r lost by Radhika. so divide 16/-2 will give answer 8 questions r incorrect.
Mohini
she scores -5 marks
Her 7 questions are correct
so marks given for correct answers is 7*3= 21
incorrect answers = 13
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