An examination consists of 90 questions: 20 from English, 30 from Mathematics, and 40 from General Knowledge. Sakshi attempted 60% of the English questions, 40% of the Mathematics questions, and 50% of the General Knowledge questions. All the attempted questions were correct. The passing marks are 60%, and each question carries one mark. Sakshi did not pass the exam. How many more questions should she have answered correctly to pass the examination?

1. A

   8

2. B

   9

3. C

   10

4. D

   31

Appeared in: Haryana CHO - 2022

Explanation

• The first step is to calculate the total marks required to pass, which is 60% of the total 90 questions, equalling 54 marks.
• Next, calculate the marks Sakshi obtained in each subject: 12 in English (60% of 20), 12 in Mathematics (40% of 30), and 20 in General Knowledge (50% of 40).
• Summing these up, Sakshi's total score is 12 + 12 + 20 = 44 marks.
• The final step is to find the difference between the passing marks and Sakshi's score: 54 - 44 = 10.
• This means Sakshi needed 10 more correct answers to achieve the passing score.

Why Other Options Were Wrong

• Option A: This is an incorrect calculation. It might result from miscalculating the marks obtained in one of the subjects, for example, calculating the math score as 10 instead of 12.
• Option B: This is an incorrect calculation. It could arise from a simple arithmetic error, such as calculating the passing score as 53 instead of 54.
• Option D: This value is significantly higher than the correct answer. It does not correspond to any logical step in the calculation and may be a random distractor.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Percentage and Arithmetic Calculation as background academic context rather than a clinical decision trigger.
• Numerical ability is a crucial skill tested in many nursing entrance examinations, as nurses frequently perform calculations for medication dosages, IV drip rates, and patient data analysis.
• This type of question assesses foundational math skills, including the ability to work with percentages accurately and efficiently under time pressure.
• What if the passing percentage was 50%? In that case, the passing score would be 45 (50% of 90). Since Sakshi scored 44, she would have needed only 1 more mark to pass.

How to Approach the Question

• First, carefully read the problem and identify all the given numerical values: total questions, breakdown by subject, percentages attempted, and the passing percentage.
• Calculate the total marks required to pass the exam. In this case, find 60% of the total 90 questions.
• Next, calculate the number of questions Sakshi answered correctly in each individual subject by applying the given percentages to the total questions in that subject.
• Sum the marks from all subjects to determine Sakshi's total score.
• Finally, subtract Sakshi's total score from the passing score. The result is the number of additional marks (and thus questions) she needed to pass.

Concept Tested & Keywords

• Concept Tested: Percentage and Arithmetic Calculation
• Stem keywords: examination, 90 questions, English, Mathematics, General Knowledge, passing marks, 60%
• Lead-in keywords: How many more questions

Question ID

QMgpKi7VfpKTmHKkqnF86K

Copy ID