Data Interpretation - Table Charts - Discussion
Discussion Forum : Table Charts - Table Chart 4 (Q.No. 5)
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 |
5.
If it is known that at least 23 students were eligible for a Symposium on Chemistry, then the minimum qualifying marks in Chemistry for eligibility to Symposium would lie in the range?
Answer: Option
Explanation:
Since 66 students get 20 and above marks in Chemistry and out of these 21 students get 30 and above marks, therefore to select top 35 students in Chemistry, the qualifying marks should lie in the range 20-30.
Discussion:
38 comments Page 1 of 4.
Madhan mohan said:
1 year ago
I cannot understand this, please explain this clearly to understand.
(3)
Ediomo Bright said:
2 years ago
@All
If at least 23 students are to be selected, at most all the students (all 100 of them) can be selected. Use this logic: I ask you to buy me at least three bananas. You get to the store and see ten of them. Buying all ten of them is not wrong, is it? Hence, my request is still fulfilled.
Now, for all 100 students to be selected, their marks must all fall between the 0 and Above category. Therefore, the lowest mark or the minimum cut-off mark for selection must lie within the 0–10 range.
If at least 23 students are to be selected, at most all the students (all 100 of them) can be selected. Use this logic: I ask you to buy me at least three bananas. You get to the store and see ten of them. Buying all ten of them is not wrong, is it? Hence, my request is still fulfilled.
Now, for all 100 students to be selected, their marks must all fall between the 0 and Above category. Therefore, the lowest mark or the minimum cut-off mark for selection must lie within the 0–10 range.
Luis said:
2 years ago
I am not understanding this.
If they say "AT LEAST" 23 students were eligible, that means that it could have been 23 but it might as well have been 100 eligible students.
So, in that sense, the minimum required grade is 0 out of 50 no?
If they say "AT LEAST" 23 students were eligible, that means that it could have been 23 but it might as well have been 100 eligible students.
So, in that sense, the minimum required grade is 0 out of 50 no?
(4)
Vishal Jain said:
4 years ago
In 21, 4 also includes which mean a student who obtained marks greater than 30-40 are 17 but above 30 it is 21 means in 21 4 students are above 40 or equal to 4.
So, 21 students select from 30-40 range and rest of 2 students are selected from 20 -30 range.
So, 21 students select from 30-40 range and rest of 2 students are selected from 20 -30 range.
(6)
Gagan said:
4 years ago
@Everyone.
We have to select 23 students (eligible students). So for that 21, we can select from 30 and above range and for selecting 2 more students we need to select 2 students from 20-30 range.
So 20-30 range is the correct option.
We have to select 23 students (eligible students). So for that 21, we can select from 30 and above range and for selecting 2 more students we need to select 2 students from 20-30 range.
So 20-30 range is the correct option.
(9)
Goms said:
4 years ago
@All.
Guys all of you must listen carefully in the question that is they are asking "minimum qualifying marks" to select "at least 23 students". So we must go from the lowest marks.
Below 20 is 100-87=19<23.
10 to 20 is not an option so neglect that.
20 to 30 is 66-21=45>23.
So the answer is the 20-30 range.
I hope you all clear.
Guys all of you must listen carefully in the question that is they are asking "minimum qualifying marks" to select "at least 23 students". So we must go from the lowest marks.
Below 20 is 100-87=19<23.
10 to 20 is not an option so neglect that.
20 to 30 is 66-21=45>23.
So the answer is the 20-30 range.
I hope you all clear.
(15)
Aaradhya said:
5 years ago
@ Sagar.
You are right.
23 students will lie in between 20-30.
You are right.
23 students will lie in between 20-30.
Sagar said:
6 years ago
@All.
They asked the range in which the Qualifying Marks lie which qualifies 23 students for Symposium. 30 & above has 21 students which means, if 30 was qualifying marks for symposium then only 21 students would be eligible. But the number of students eligible is 23.20 & above has 66 students which means, somewhere in 20-30 range lies our Qualifying Marks which makes 23 students eligible for the Symposium. No one knows the exact marks, it could be anywhere between 20-30.
Hope this clears your doubts.
They asked the range in which the Qualifying Marks lie which qualifies 23 students for Symposium. 30 & above has 21 students which means, if 30 was qualifying marks for symposium then only 21 students would be eligible. But the number of students eligible is 23.20 & above has 66 students which means, somewhere in 20-30 range lies our Qualifying Marks which makes 23 students eligible for the Symposium. No one knows the exact marks, it could be anywhere between 20-30.
Hope this clears your doubts.
(6)
Priyanka said:
6 years ago
I cannot understand. Please explain.
Priyu said:
7 years ago
40% = 40/100 * 50 = 20.
Less than 40 means 73,
So, 100 -73 = 27.
Less than 40 means 73,
So, 100 -73 = 27.
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