Bissoy.com
Doctors Medicines MCQs Q&A

The following table shows the percentage of marks obtained by seven students in six different subjects in an examination. Student Maths Chemistry Physics Geography History Computer Science   Maximum Marks = 150 Maximum Marks = 130 Maximum Marks = 120 Maximum Marks = 100 Maximum Marks = 110 Maximum Marks = 90 Ankit 100 80 80 40 70 70 Aman 90 50 90 60 90 80 Ayush 80 65 70 70 80 80 Rohit 90 60 80 95 60 60 Tanvi 80 65 65 80 40 60 Tarun 70 75 85 77 50 90 Muskan 65 35 50 85 80 80   What are the average marks obtained by all the seven students in Physics? (Rounded off to two digits after the decimal)

The following table shows the percentage of marks obtained by seven students in six different subjects in an examination. Student Maths Chemistry Physics Geography History Computer Science   Maximum Marks = 150 Maximum Marks = 130 Maximum Marks = 120 Maximum Marks = 100 Maximum Marks = 110 Maximum Marks = 90 Ankit 100 80 80 40 70 70 Aman 90 50 90 60 90 80 Ayush 80 65 70 70 80 80 Rohit 90 60 80 95 60 60 Tanvi 80 65 65 80 40 60 Tarun 70 75 85 77 50 90 Muskan 65 35 50 85 80 80   What are the average marks obtained by all the seven students in Physics? (Rounded off to two digits after the decimal) Correct Answer 89.14

Total percentage of all seven students in physics = 80 + 90 + 70 + 80 + 65 + 85 + 50 = 520%

Average percentage of all seven students in physics

⇒ (520/7)%

⇒ 520/700

Average marks of all seven students in physics

⇒ (520/700) × 120

⇒ 89.14

∴ The average marks scored is 89.14.

Mistake Points

 Note that,  the tabulation in the question provides the percentage of marks by each student. So, if we go and obtain the average by just adding each value in the table and then dividing it by total the solution will be wrong. We are asked to find the average marks and not the average percentage.

Related Questions

The table shows the percentage of marks obtained by seven students in six different subjects in an examination. The numbers in the brackets are the maximum marks in each subject. Student Subject (Max. Marks) Maths (150) Chemistry (130) Physics (120) Geography (100) History (60) Computer Science (40) A 90 50 90 60 70 80 B 100 80 80 40 80 70 C 90 60 70 70 90 70 D 80 65 80 80 60 60 E 80 65 85 95 50 90 F 70 75 65 85 40 60 G 65 35 50 77 80 80 What are the average marks obtained by all the seven students in Physics? (Correct to two decimal places)
The table shows the percentage of marks obtained by seven students in six different subjects in an examination. The numbers in the brackets are the maximum marks in each subject. Student Subject (Max. Marks in percentage) Maths (150) Chemistry (130) Physics (120) Geography (100) History (60) Computer Science (40) A 90 50 90 60 70 80 B 100 80 80 40 80 70 C 90 60 70 70 90 70 D 80 65 80 80 60 60 E 80 65 85 95 50 90 F 70 75 65 85 40 60 G 65 35 50 77 80 80   What are the average marks obtained by all the seven students in Mathematics? (Correct to two decimal places)
In class of 105 students out of three subjects Maths, Physics, Chemistry each student studies at least one subject. In Maths 47, in Physics 50, and in Chemistry 52 students studies, 16 in Maths and Physics, 17 in Maths and Chemistry and 16 in Physics and Chemistry students both subjects. What will be the number of students who studies all three subjects?
In an examination, there were three subjects Hindi, Maths, and Science. Marks scored by Karan in Hindi is 60. Marks scored by Karan and Lokesh in Maths is equal. Marks scored in 3 subjects by Lokesh is 200. Marks scored by Lokesh in science is 25 % of total marks obtained. Marks scored by Mohit in Hindi is equal to marks scored by Lokesh in Maths. Marks scored in Maths by Mohit is 5 more than the marks scored in Hindi. Marks scored in Maths by Lokesh is 20 more than marks scored in Science. Marks obtained by Karan, Lokesh, and Mohit in Hindi are what percent of marks obtained by Karan, Lokesh, and Mohit in Maths?
In class of 105 students out of three subjects Maths, Physics, Chemistry each student studies at least one subject. In Maths 47, in Physics 50, and in Chemistry 52 students studies, 16 in Maths and Physics, 17 in Maths and Chemistry and 16 in Physics and Chemistry students both subjects. What will be the number of those students who study only two subjects?
In a year-end examination, 6 papers-Maths, Physics, Geography, Economics, Chemistry, History- are scheduled on 6 consecutive days of a week (Monday -Saturday). 1. Maths paper is after the Chemistry paper, with a 1-day gap between them. 2. Physics paper is on Monday. 3. Geography paper is not on the last day. 4. History paper, which is scheduled on the previous day of the Maths paper, has a two-day gap with the Physics paper. In the above description, the History paper was cancelled due to incompletion of syllabus and the exam was scheduled for five days (Monday - Friday), with the order of the papers reversed. Which paper was scheduled on Thursday? 
In a year-end examination, 6 papers-Maths, Physics, Geography, Economics, Chemistry, History- are scheduled on 6 consecutive days of a week (Monday -Saturday). 1. Maths paper is after the Chemistry paper, with a 1-day gap between them. 2. Physics paper is on Monday. 3. Geography paper is not on the last day. 4. History paper, which is scheduled on the previous day of the Maths paper, has a two-day gap with the Physics paper. Which paper is scheduled on Saturday?
An examination consists of four sections viz. Maths, Science, English and Hindi. Certain number of students registered for the examination in which 12% did not appear for the examination and 8% of the total registered students were not able to clear any section. 12.5% of the appeared students cleared only Maths section, 25% of the appeared students cleared only Maths and Science section. 13% of the total registered students cleared only Maths, Science and English section. If the remaining students who appeared for the examination are 51 and cleared all the four sections, then what is the total number of students who appeared for the examination? (Note: No other case is possible other than given in the question) 
In the following question, two statements are numbered as A and B. On solving these statements we get quantities A and B respectively. Solve for the both quantities and choose the correct option. Quantity A: Vinay secured 92.5% marks in an examination comprising of 5 subjects each of 120 marks. He scored 95% marks in English and Hindi together, while 90% marks in Mathematics. In Science, if he scored one marks more than Social studies, how many marks did he scored in Science? Quantity B: Ashi scored 75%, 80% and 90% marks in Physics, Chemistry and Mathematics sections respectively, in an examination of total 150 marks. If the Physics and Chemistry sections are worth 40% and 20% of the total marks, how many marks did Ashi secured in the examination? 
A question is followed by 2 statements. Study the following statements carefully and state whether they are sufficient to answer the question. A student appears in an examination where his marks in biology is 20 marks more than what he got in Physics. Find his marks in biology? Statement I – Average marks of Physics and Chemistry is 71.5. The ratio of marks of Practical and Theory in Physics is 6 ∶ 5 and in chemistry, it is 15 ∶ 7. Statement II –Ratio of marks obtained in the theory exam of physics and chemistry is 1 ∶ 2. The ratio of marks of Physics and Chemistry is 5 ∶ 8.