In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer :-1) Smith's answered all questions and scored (-15) marks through he got 3 correct answers.How many incorrect answer had they attempted?
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In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer :-1) Smith's answered all questions and scored (-15) marks through he got 3 correct answers.How many incorrect answer had they attempted?
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she attempted 7.5 questions
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