Pie chart
Direction: Study the following Graph carefully and answer the questions given below.
Percentage of students in various courses (A, B, C, D, E, F) and Percentage of girls out of these.
Total students = 1200 (800 girls + 400 boys)
 How many girls are there in course C?

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As per second graph,
Number of girls in course 'C' = Total number of Girls x 2%Correct Option: A
As per second graph,
Number of girls in course 'C' = Total number of Girls x 2%
Number of girls in course 'C' = 800 x 2/100 = 16
 For which pair of courses is the number of boys the same?

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As per first graph,
The number of students for course A = Total number of students x 20%
As per second graph,
The number of girls for course A = Total number of girls x 30%
Number of boys in course 'A' = The number of students for course A  The number of girls for course A
Same formula can apply for the other courses also.Correct Option: A
As per first graph,
The number of students for course A = Total number of students x 20%
As per second graph,
The number of girls for course A = Total number of girls x 30%
Number of boys in course 'A' = The number of students for course A  The number of girls for course A
Number of boys in course 'A' = (1200 x 20/100 )  ( 800 x 30/100 ) = 240  240 = 0
Similarly,
Number of boys in course 'B' = (1200 x 15/100 )  (800 x 10/100) = 180  80 = 100
Number of boys in course 'C' = (1200 x 5/100 )  (800 x 2/100) = 60  16 = 44
Number of boys in course 'D' = (1200 x 35/100 )  (800 x 30/100) = 420  240 = 180
Number of boys in course 'E' = (1200 x 12/100 )  800 x 14/100 ) = 144  112 = 32
Number of boys in course 'F' = (1200 x 13/100 )  ( 800 x 14/100 ) = 156  112 = 44
Hence, number of boys in course 'C' and 'F' are same which is 44.
 For course E, the number of girls is how much percent more than the boys for course E?

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For course E,
Number of boys = ( 1200 x 12/100 )  (800 x 14/100 ) = 144  112 = 32Correct Option: C
For course E,
Number of boys = ( 1200 x 12/100 )  (800 x 14/100 ) = 144  112 = 32
Number of girls = 800 x 14/100 = 112
Required percentage = ( (112  32 )/32 ) x 100 = (80/32) x 100 = 250%
 For which course is the number of boys the minimum?

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As per first graph,
The number of students for course A = Total number of students x 20%
As per second graph,
The number of girls for course A = Total number of girls x 30%
Number of boys in course 'A' = The number of students for course A  The number of girls for course ACorrect Option: A
As per first graph,
The number of students for course A = Total number of students x 20%
As per second graph,
The number of girls for course A = Total number of girls x 30%
Number of boys in course 'A' = The number of students for course A  The number of girls for course A
Number of boys in course 'A' = (1200 x 20/100 )  ( 800 x 30/100 ) = 240  240 = 0
Number of boys in course 'C' = (1200 x 5/100 )  (800 x 2/100) = 60  16 = 44
Number of boys in course 'E' = (1200 x 12/100 )  800 x 14/100 ) = 144  112 = 32
Number of boys in course 'F' = (1200 x 13/100 )  ( 800 x 14/100 ) = 156  112 = 44
Hence, in course 'A' number of boys is minimum which is Zero.
 For course D what is the respective ratio of boys and girls?

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As per first graph,
The number of students for course D = Total number of students x 20%
As per second graph,
The number of girls for course D = Total number of girls x 30%
Number of boys in course 'D' = The number of students for course D  The number of girls for course DCorrect Option: A
As per first graph,
The number of students for course D = Total number of students x 20%
As per second graph,
The number of girls for course D = Total number of girls x 30%
Number of boys in course D = The number of students for course D  The number of girls for course D
Number of boys = ( 1200 x 35/100 )  ( 800 x 30/100 ) = 420  240 = 180
Number of girls = 800 x 30/100 = 240
Since, required ratio = 180 : 240 = 3 : 4