Data Interpretation - Table Charts - Discussion
Discussion Forum : Table Charts - Table Chart 4 (Q.No. 3)
Directions to Solve
Study the following table and answer the questions.
Classification of 100 Students Based on the Marks Obtained by them in Physics and Chemistry in an Examination.
| Subject | Marks out of 50 | ||||
| 40 and above | 30 and above | 20 and above | 10 and above | 0 and above | |
| Physics | 9 | 32 | 80 | 92 | 100 |
| Chemistry | 4 | 21 | 66 | 81 | 100 |
| Average (Aggregate) | 7 | 27 | 73 | 87 | 100 |
3.
The percentage of number of students getting at least 60% marks in Chemistry over those getting at least 40% marks in aggregate, is approximately?
Answer: Option
Explanation:
Number of students getting at least 60% marks in Chemistry
= Number of students getting 30 and above marks in Chemistry
= 21.
Number of students getting at least 40% marks in aggregate
= Number of students getting 20 and above marks in aggregate
= 73.
| Required percentage |
|
|||||||
| = 28.77% | ||||||||
 29%. |
Discussion:
14 comments Page 2 of 2.
Banu said:
1 decade ago
@Pradeepika.
30 and above i.e. 40 is above 30 only so no need to include 40 and above as it is already in 30 and above.
30 and above i.e. 40 is above 30 only so no need to include 40 and above as it is already in 30 and above.
Shashi said:
1 decade ago
At-least consider minimum to minimum so,
60% of chem=50*0.6=30 (so 21).
similarly 40% of agg=50*0.4=20 (so 73).
Finally,
(21/73) *100=28.77==29%.
60% of chem=50*0.6=30 (so 21).
similarly 40% of agg=50*0.4=20 (so 73).
Finally,
(21/73) *100=28.77==29%.
Pradeepika said:
1 decade ago
Here they have mentioned that students getting at least 60% marks in chemistry. My question is why can't we take students who scored 40% and above then the calculation will go this way.
Students who scored 30% and above=21.
Students who scored 40% and above=4.
Total = 21+4 = 25.
Similarly for students who scored aggregate marks.
Why it is taken from 20% and above it can go lower.
Or it could be taken directly from 40% and above that means only 7 is taken into consideration.
Students who scored 30% and above=21.
Students who scored 40% and above=4.
Total = 21+4 = 25.
Similarly for students who scored aggregate marks.
Why it is taken from 20% and above it can go lower.
Or it could be taken directly from 40% and above that means only 7 is taken into consideration.
Vinod tripathi said:
1 decade ago
I didn't get ths caclculation in any way help me in a siple way.
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