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There are 90 multiple choice questions in a test. Suppose you get two marks for every correct answer and for every question you leaver un attempted or answer wrongly, one mark is deducted from your total score of correct answers. If you get 60 marks in the test, then how may questions did you answer correctly?
There are 90 multiple choice questions in a test. Suppose you get two marks for every correct answer and for every question you leaver un attempted or answer wrongly, one mark is deducted from your total score of correct answers. If you get 60 marks in the test, then how may questions did you answer correctly?
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The number of question ans correct by 'x'
The number of question answered correctly = 90 - x
Total Marks obtained =60
Marks obtained for correct answer = 22
Marks desucted for wrong answer =
-1 (90-2) = x - 90
2x + 2- 90=60
3x = 150
X = 150/3
X = 50
Therefore the number of question answered correctly is 50
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Copy to nhi kiya but i hope it is correct
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The number of question ans correct by 'x'
The number of question answered correctly = 90 - x
Total Marks obtained =60
Marks obtained for correct answer = 22
Marks desucted for wrong answer
= - 1 ( 90 - 2 )
= x - 90
2x + 2 - 90 = 60
3x = 150
X = 150/3
X = 50
Therefore the number of question answered correctly is 50.
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