in a competitive exam there are90 mcqs 4 mark are awarded for every correct answer 2 mark are deducted for every wrong answer &0.5 mark are decduted for every unattempted question from the total score of correct answer lf a student leaves 10 question unattempted and score a total of 195 marks how many answer of his were correct?
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He has done 60 questions correctly and 20 wrong and 10 unattempted .
60×4= 240
20×2=40
10×0.5 = 5
total marks = 240-40-5 = 195 .☺
60×4= 240
20×2=40
10×0.5 = 5
total marks = 240-40-5 = 195 .☺
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Answer:
Given :- In a competitive exam there are 90 multiple choice questions 4 marks are awarded for every correct answer,2 marks are deducted for every wrong answer and 0.5 marks are deducted for every unattempted question. from the total score of correct answers.if a students leaves 10 questions unattempted and scores a total of 195 marks, how many of his answers were correct
Solution :-
=> Let the answers correct be 'x'
=>Then, answer wrong = 80
--: According To Condition :-
=>4x-2(80-x) - 10(0.5) = 195
=>4x-160+2x-5 = 195
=>6x = 360
=> x = 60
=> Therefore, correct answer = 60
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