Question

in a school 720 are boys 40% are girls find the number of girls. give me answer with explanation

Answer 1

In a school ;

Let the total number of students be x

40% of students are girls.
Number of boys = 720

Percentage of boys in a school
= 100-40
= 60%
__________________________

60% of x = 720
(60/100) × x = 720
x = 120×10
x = 1200
________________________
Number of girls
= 1200-720
= 480
===========================

Answer 2

let p be the total number of students of the school.
40% are girls then 60% will be boys(100%-40%)

60% of p= 720
60/100×p=720
p= 1200

therefore total number of students is 1200

40% of 1200= number of girls
40/100× 1200=480

therefore the number of girls is 480