The given bar-graph shows the number of boys and girls in classes A, B, C and D in a school, the number of teachers allotted to each class and the number of students promoted to the next class.
Which class has the highest percentage of failed students?
Answer & explanation
Correct answer: option 1
In class A ,
Total number of students = 27 + 31 = 58
Number of failed students = 58 - 43 = 15
Percentage of failed students = \(\frac{15 }{58}\) × 100 = 25.86%
In class B ,
Total number of students = 35 + 30 = 65
Number of failed students = 65 - 45 = 20
Percentage of failed students = \(\frac{20 }{65}\) × 100 = 30.76%
In class C ,
Total number of students = 30 + 32 = 62
Number of failed students = 62 - 58 = 4
Percentage of failed students = \(\frac{4 }{62}\) × 100 = 6.45%
In class D ,
Total number of students = 33 +34 = 67
Number of failed students = 67 - 61 = 6
Percentage of failed students = \(\frac{6 }{67}\) × 100 = 8.95%
So , highest percentage of failed students is in class B .