Q. 164.3( 26 Votes )

There are 180 multiple choice questions in a test. If a candidate gets 4 marks for every correct answer and for every unattempted or wrongly answered question one mark is deducted from the total score of correct answers. If a candidate scored 450 marks in the test, how many questions did he answer correctly?

Answer :

Let the number of correct answers are x


Number of wrong answered questions are (180 - x)


Total score due to right answers = 4x


Marks deducted due to wrong answers = 1(180 - x) = 180 - x 


According to question:







Therefore number of correct questions are 126

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