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Data Interpretation - Table Charts - Discussion

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"Do not wait for leaders; do it alone, person to person."
- Mother Teresa

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

4.

The number of students scoring less than 40% marks in aggregate is?

 [A]. 13 [B]. 19 [C]. 20 [D]. 27

Explanation:

 We have 40% of 50 = 40 x 50 = 20. 100

Required number

= Number of students scoring less than 20 marks in aggreagate

= 100 - Number of students scoring 20 and above marks in aggregate

= 100 - 73

= 27.

 Sain said: (Fri, Feb 18, 2011 03:29:26 AM) please remove the word "less than" from the question.

 Umesh said: (Thu, Jul 14, 2011 12:24:41 PM) Is there is no short tricks to solve these problems and problems. Related to pie chart and other d. I. Problems. If there are plese send me the short tricks.