Question

in a class 45 % of students are girls. if there are 18 girls in a class than find total number of students.​

Answer 1

total number of students = 40

Explanation:

45% of total is 18 girls

100% represents the total number of students

let x be the total number of students in the class

solve using proportion

`(percent)/(number)`

`(45)/(18)` =
`(100)/(x)` ( cross- multiply )

45x = 1800 ( divide both sides by 45 )

x = 40

total number of students in the class is 40