Question

3. In a certain school, there are 456 girls. Calculate the total number of students

if 24% of the total students are girls.

4.A man got 20% increase in his salary. His new salary is 24,000 rupees Find his
original salary

PLS I need the answers in like 5 to 10 minutes pls​

Answer 1

3) girls = 24% = 456

let the total number of students be = x

`(24)/(100) * x = 456`

`x = 456 * (100)/(4)`

`x = 1900`

the total number of students is 1900

4) increase = 20%

new salary = 24000 rupees

let his original salary be = y

`(20)/(100) * y = 24000 - y`

`0.2y = 24000 - y`

`0.2y + y = 24000`

`1.2y = 24000`

`y = (24000)/(1.2)`

`y = 20000`

his original salary is 20,000 rupees