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Data Interpretation - Table Charts - Discussion

Discussion Forum : Table Charts - Table Chart 4 (Q.No. 3)
Table Charts
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
Physics9328092100
Chemistry4216681100
Average (Aggregate)7277387100

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?
21%
27%
29%
31%
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
= ( 21 x 100 ) %
73
= 28.77%
~= 29%.

Discussion:
14 comments Page 2 of 2.
Nandhu said:   8 years ago
Actually (60/100)*50=30...so yu go 30and above in chemistry. now you get 21, keep it safe...then you must go to aggregate atleast40% (40/100)*50=20.

so you go 20and above in aggregate, now, you get 73.

Then you find the required percentage ..(21/73)*100=28.77% ~=29%.
Sushmitha said:   7 years ago
Please, anyone explain this to me.
Geetha said:   5 years ago
Thank you @Farhin.
Yash Detani said:   4 months ago
Answer is not 41, because 30 and above includes the number of students who scores 40 to 50.
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