The given bar-graph shows the number of boys and girls in classes A, B, C and D in a school, and the number of teachers allotted to each class.
Which class has the least percentage of girls?
Answer & explanation
Correct answer: option 1
In class A ,
Total strength = 27 + 31 + 8 = 66
Number of girls = 31
Percentage of girls = \(\frac{31 }{66}\) × 100 = 46.96%
In class B ,
Total strength = 35 + 30 + 10 = 75
Number of girls = 30
Percentage of girls = \(\frac{30 }{75}\) × 100 = 40%
In class C ,
Total strength = 30 + 32 + 9 = 71
Number of girls = 32
Percentage of girls = \(\frac{32 }{71}\) × 100 = 45.07%
In class D ,
Total strength = 33 + 34 + 7 = 74
Number of girls = 34
Percentage of girls = \(\frac{34 }{74}\) × 100 = 50%
So , Class B has least percentage of girls.