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In a class test (+3) marks are given for every correct answer and (-2) marksare given for every incorrect answer and no marks for not attempting anyquestion. 1 Radhika scored 20 marks. If she has got 12 correct answers, howmany questions has she attempted incorrectly? (2) Mohini scores – 5 marks in thistest, though she has got 7 correct answers, How many questions has sheattempted incorrectly? |
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Answer» Answer: (1) 8 (2) 8 Step-by-step EXPLANATION: A.1 First we will multiply 3 with 12 which is 36. Then, we will SUBTRACT 20 from 36 we will GET 16 and at last we will divide 16 with 2 so the answer is 8. A.2 First we will multiply 3 with 7 which is 21. Then, we will subtract 5 from 21 we will get 16 and at last we will divide 16 with 2 so the answer is 8. |
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