In an examination, there are 100 questions. There is a negative marking of -12 marks \(-{1 \over 2}\) marks and maximum marks for the paper is 200. If Ravi attempts only 80 questions and got 115 marks, what is the count of Ravi's wrong questions?
Answer
Correct Answer : a ) 18
Explanation :According to the question,
Total marks for the examination are = 200
Thus, marks for each correct question will be = 200/100 = 2 marks
Let us assume total incorrect questions attempted by Ravi = x
Thus, the correct question attempted by Ravi = 80 – x
Now, according to the question
Correct marks – Incorrect marks = 115
\((80-x)*2-x*{1 \over 2}=115\)
⇒\(160-2x-{x \over 2}=115\)
⇒\({5x \over 2}=160-115\)
⇒ 5x = 45 * 2
⇒ x = 18
Therefore, total incorrect questions for Ravi = 18 questions
Hence, (a) is the correct answer.
Share QOTD
Popular Blog
Paris Olympics 2024: Brief History of Olympics, Winners at Paris Olympics, Related Facts
Read More
Highlights of Union Budget 2024-25
Read More
Highlights of Interim Budget 2024
Read More
150+ Paryayvachi Shabd in Hindi - पर्यायवाची शब्द
Read MoreLatest Current Affairs
Daily Current Affairs and GK | 23 November 2024
Read More
Daily Current Affairs and GK | 22 November 2024
Read More
Daily Current Affairs and GK | 21 November 2024
Read More
Daily Current Affairs and GK | 20 November 2024
Read More
Daily Current Affairs and GK | 19 November 2024
Read MoreLatest Banking Awareness
Banking Awareness of 19 and 20 November 2024
Read More
Banking Awareness of 16, 17 and 18 November 2024
Read More
Banking Awareness of 13, 14 and 15 November 2024
Read More
Banking Awareness of 10, 11 and 12 November 2024
Read More
Banking Awareness of 8 and 9 November 2024
Read More
Comments