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In a test, (+4) marks are given for every correct answer and (-2)for every incorrect answer. Amit answered all the questions and scored 110 marks though he got 35 correct answers. How many questions has he attempted incorrectly?PLEASE GIVE STEP BY STEP EXPLANATION.THANK YOU |
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Answer» Answer: 15 INCORRECT answers. Step-by-step EXPLANATION: MARKS given for correct answers=+4 Thus marks given for 35 correct answers=(+4)*35=140 Total score=110 Marks given for incorrect answers= -2 Thus number of incorrect answers= 140-110=30 =30/(-2)=-15 Thus number of incorrect answers=15 |
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