Question

72% of the total number of students in a school are boys if there are 1800 boys, find the total number of students also find the ratio of the number of boys to the number of girls​

Answer 1

total students = 2500

boys : girls = 18:7

Step-by-step explanation:

let total number of students = x

given,

72% of x = 1800

=> 72x/100 = 1800

=> x = 1800×100/72

=> x = 2500

boys : girls = 72% : 28 %

=> boys : girls = 18 : 7

Answer 2

Answer:

TOTAL NUMBER OF STUDENTS=2500

TOTAL NUMBER OF GIRLS=700

RATIO OF BOYS IS TO GIRLS=18:7

Step-by-step explanation:

Total number of students be x

Total number of boys is 72% = 1800 boys

then to find total number of students will be:

72% of x is 1800

72% × x = 1800

72/100×x=1800

x= 1800×100÷72

x=2500

so the total number of students are 2500.

Total number of girls are:

100%-72%=28%

Total number of students - number of boys = number of girls

2500-1800=700

Total number of girls are 700.

RATIO OF NUMBER OF BOYS IS TO NUMBER OF GIRLS

1800/700=18:7

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