An exam has three sections Section I, Section II and Section III. Each section has exactly 20 questions.
For each question in Section I, three marks were awarded for every correct answer, while one mark was deducted for every wrong answer.

For each question in Section II, six marks were awarded for every correct answer, while two marks were deducted for every wrong answer.

For each question in Section III, two marks were awarded for every correct answer, while one mark was deducted for every wrong answer.

 In any section, no marks were either awarded or deducted for any question left unattempted.Exactly three students, Amit, Bob and Chatur, attempted the exam and each student attempted all the questions in the exam.

Further, the total marks scored by any student in any section were positive. The following bar chart provides the marks scored by each student in each section as a percentage of the total marks scored by the student, rounded off to two decimal.
Blue – Section I  , Orange- Section II , Grey- Section III


Q1.What is the minimum number of questions attempted correctly by any of the three students?
a) 25 b) 30 c) 35 d)40

Q2. Who scored the maximum marks in Section I?
a) Amit b) Bob c) Chatur d) Cannot be determined

Q3. If, for each student, the net marks per question is defined as the ratio of the total marks obtained by that student to the number of questions correctly attempted by that student, what is the highest net marks per question for any student? (rounded off to two decimal places)
a) 2.94 b) 3 c) 3.16 d) 3.38

 Q4. What are the minimum marks scored by any student in Section II?
a) 24 b) 40 c) 56 d) 64

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