Question

there are 700 students in a school out of which 420 girl.find the percentage of boys in the school

Answer 1

Hey there !

Solution:

Total Number of Students: 700

Number of Girls: 420

Number of Boys = Total Number of Students - Number of Girls

=> Number of Boys = 700 - 420 = 280

∴ Number of boys is 280.

$\text{Percentage} = \dfrac{ \text{Number of boys}}{ \text{ Total Number of students}} \times 100$

$\implies Percentage = \dfrac{280}{700} \times 100 \\ \\ \implies Percentage = \dfrac{ 28000}{700} = 40 \: \%$

Hope my answer helped !