Data Interpretation - Table Charts - Discussion
Discussion Forum : Table Charts - Table Chart 3 (Q.No. 1)
Directions to Solve
The following table gives the percentage of marks obtained by seven students in six different subjects in an examination.
The Numbers in the Brackets give the Maximum Marks in Each Subject.
| Student | Subject (Max. Marks) | |||||
| Maths | Chemistry | Physics | Geography | History | Computer Science | |
| (150) | (130) | (120) | (100) | (60) | (40) | |
| Ayush | 90 | 50 | 90 | 60 | 70 | 80 |
| Aman | 100 | 80 | 80 | 40 | 80 | 70 |
| Sajal | 90 | 60 | 70 | 70 | 90 | 70 |
| Rohit | 80 | 65 | 80 | 80 | 60 | 60 |
| Muskan | 80 | 65 | 85 | 95 | 50 | 90 |
| Tanvi | 70 | 75 | 65 | 85 | 40 | 60 |
| Tarun | 65 | 35 | 50 | 77 | 80 | 80 |
1.
What are the average marks obtained by all the seven students in Physics? (rounded off to two digit after decimal)
Answer: Option
Explanation:
Average marks obtained in Physics by all the seven students
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| + (80% of 120) + (85% of 120) + (65% of 120) + (50% of 120) ] | |||||
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| = 89.14. |
Discussion:
51 comments Page 4 of 6.
Kumaraswamy said:
1 decade ago
@Neharika:
All above total markes same, so per add 120 is common
a%150 + b%150 + c%150=(a +b +c)%150
All above total markes same, so per add 120 is common
a%150 + b%150 + c%150=(a +b +c)%150
Sam said:
1 decade ago
How we got 624?
Sekar said:
1 decade ago
@Sam
(90+80+70+80+85+65+50/100)*120 = ((520)/100)*120 = 52*12 = 624
(90+80+70+80+85+65+50/100)*120 = ((520)/100)*120 = 52*12 = 624
Krishna said:
1 decade ago
Why we are calculating % over here? means in order to find avg we just sum all the number/total num.
Sami said:
1 decade ago
Why we are taking 1/7 here?
DEVARAJU said:
1 decade ago
We are taking only marks here. Why we have to take % here.
Actually marks are given of all students so, We calculate only avg of marks.
Sol: Total marks is 520/7 = 74.29.
Actually marks are given of all students so, We calculate only avg of marks.
Sol: Total marks is 520/7 = 74.29.
Namit said:
1 decade ago
Here marks is not given percentage is given of max marks.
Reshma pawar said:
1 decade ago
Yes @Namit you are right. So for calculating average, first we have to find the marks obtained by each student out of max. Marks and then add all marks and divide by 7.
Christine said:
1 decade ago
Thanks guys. It clear my doubt. I didn't understand at first and after reading your post I came to know the reason. I really appreciate it.
Akshata said:
8 years ago
90% of 120 is 108.
How can 90 came?
How can 90 came?
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