Pie chart
Direction: Study the following information to answer the given questions.
- For course D, what is the respective ratio of boys and girls?
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Required ratio = Number of boy students for course D : Number of girl students for course D
Correct Option: A
Given:-Total number of students for course D = 35% of 1200 = 420
Number of girl students for course D = 30% of 800 = 240 ,
Number of boy students for course D = Total number of students for course D - Number of girl students for course D = 420 − 240 = 180
Required ratio = Number of boy students for course D : Number of girl students for course D
Required ratio = 180 : 240 = 3 : 4
- For which course is the number of boys the minimum?
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View Hint View Answer Discuss in Forum
From above graph ,we can see that
Since , For A course the number of boys is minimum.Correct Option: D
From above graph ,we can see that
Since , For A course the number of boys is minimum.
Hence Answer will be A course.
- For which pair of courses is the number of boys the same?
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View Hint View Answer Discuss in Forum
Number of boys for difference courses are
A = 0; B = 100; C = 44; D = 180; E = 32; F = 44.Correct Option: C
From above given pie-chart , we can see that
Number of boys for difference courses are
A = 0; B = 100; C = 44; D = 180; E = 32; F = 44.
Hence ,C and F pair of courses are the number of boys the same .
Direction: Study the pie chart carefully to answer the question that follows
- The number of students enrolled in Cooking classes is what percent of those enrolled in Dancing classes?
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View Hint View Answer Discuss in Forum
Required percentage = number of students enrolled in Cooking classes x 100/ number of students enrolled in Dance classes
Correct Option: B
Required percentage = number of students enrolled in Cooking classes x 100/ number of students enrolled in Dance classes
Required percentage = 22 x 100/21 = 104.76
Direction: Study the following pie-diagrams carefully to answer these questions
- In which of the following faculties the percentage increase in the number of students was minimum from 2008 to 2009 ?
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View Hint View Answer Discuss in Forum
In 2008, number of students in Science = Total Student in 2008 x 24%
In 2009, number of students in Science = Total Student in 2009 x 22%
In 2008, number of students in Commerce= Total Student in 2008 x 22%
In 2009, number of students in Commerce= Total Student in 2009 x 24%
In 2008, number of students in Arts = Total Student in 2008 x 12%
In 2009, number of students in Arts = Total Student in 2009 x 11%
In 2008, number of students in Medicine= Total Student in 2008 x 11%
In 2009, number of students in Medicine= Total Student in 2009 x 10%
Required percentage = (number of students in 2009 - number of students in 2008) x 100 / number of students in 2008Correct Option: D
In 2008, number of students in Science = Total Student in 2008 x 24%
In 2008, number of students in Science = 35000 x 24% = 35000 x 24/100 = 8400
In 2009, number of students in Science = Total Student in 2009 x 22%
In 2009, number of students in Science = 40000 x 22% = 40000 x 22/100 = 8800
Increase in number of students of Science = 8800 - 8400 = 400
Hence, Increase percentage = 400 x 100 /8400 = 400/84 = 4.7%
Similary
Increase in number of students of Commerce = 24x40000/100 - 22x35000/100 = 9600 - 7700 = 1900
Hence, their increase percentage = 1900x100 /7700 = 1900/77 = 24.67%
Increase in number of student of Arts = 11/100 x 40000 - 12/100 x 35000 = 4400 - 4200 = 200
Hence , their increase percentage = 200/4200 x 100 = 4.67
Increase in number of student of Medicine = 10/100 x 40000 - 11/100 x 35000 = 4000 - 3850 = 150
Hence, their increase percentage = 150/3850 x 100 = 3.89%
So, in Medicine the percentage increase in the number of student was minimum from 2008 to 2009
