Question

Class VII has a strength of 50 students out of which 40% are girls. Class VI has a strength of 40 and number of girls are 16. What is the difference in percentages of boys in both the classes?

• A. 0%
• B. 5%
• C. 20%
• D. 10%

Answer 1

The correct option is A 0%

For Class VII:
Number of students in classVII = 50
Number of girls = 40% of 50
= $\frac{40}{100}\times 50$
= 20
So, number of boys = 50 - 20 = 30
Percentage of boys in class VII
= $\frac{30}{50}\times$ 100
= 60%

For Class VI:
Total number of students in class VI = 40
Number of girls = 16
$\therefore$ Number of boys = 40 - 16 = 24
So, percentage of boys
= $\frac{24}{40}\times$ 100
= 60%

Difference in percentage of boys in both the classes
= 60% - 60%
= 0%
(As both the classes have equal percentage of boys.)