An IQ test consists of 20 multiple choice questions. 3 points are awarded for a correct answer and 1 point is deducted for a wrong answer. No points are awarded or deducted for an unanswered question. Raju attempted a total of 19 questions and his total score for the IQ test was above 32. Find the minimum number of correct answers he obtained .
Answers
Answer:
41 am i right right plz tell
Given : An IQ test consists of 20 multiple choice questions. 3 points are awarded for a correct answer and 1 point is deducted for a wrong answer. No points are awarded or deducted for an unanswered question.
Raju attempted a total of 19 questions and his total score for the IQ test was above 32.
To Find : Find the minimum number of correct answers he obtained .
Solution:
minimum number of correct answers he obtained . = x
marks obtained = 3x
Wrong = 19 - x
Deducted = 19 - x
Marks obtained = 3x -( 19 - x )
= 4x - 19
4x - 19 > 32
=> 4x > 51
=> x > 51/4
Hence minimum 13 answers correct
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