In a class test (+3) marks are given forevery correct answer and(-2) marks are given for every incorrect answer and no marks for not attempting questions. (i) Radhika scored 20marks. If she got 12 correct answer,how many questions has she attempted incorrectly?(ii)Mohini scored(-5)marks in this test,through she has got 7 correct answers.How many questions has she attempted incorrectly?
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