In an examination a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 questions and secures 125 marks, the number of questions he attempts correctly is ?->(Show Answer!)

1. In an examination a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 questions and secures 125 marks, the number of questions he attempts correctly is

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By: anil on 05 May 2019 02.00 am

let the number of correct questions be y and hence incorrect will be 75-y as total questions are 75 it is given that a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer hence 4y - 1(75-y) = 125 5y - 75 = 125 5y = 200 y = 40

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