Question

21. 80% of the total number of students of a school did not go for a picnic on a certam day. If the number of students who went for the picnic was 240, find the total number of students in the school. hinh school is 2500. ​

Answer 1

Answer:

I will help you to find out answer

Step-by-step explanation:

see for example

240 and 2500 in school

now we add ,

240+2500 =2740

is total number of students

I hope you understand and it will be help you ❤️

Answer 2

$let \: total \: Number \: of \: students \\ in \: the \: school \: be \: x$

$x - \frac{80}{100} \times x = 240$

$x - \frac{4x}{5} = 240$

$\frac{x}{5} = 240$

$x = 240 \times 5$

$x = 1200$

$Total \: number \: of \: students \: \\ in \: school \\ = 2500 - 1200 \\ = 1300$