Question

A certain Organization adopted 18% of the 400 schools in a district. How many schools did it adopt?

Answer 1

Here, 18% means 18 schools adopted out of a total of 100.
The total number of schools is 400.
Suppose the number of schools adopted is A.

${\displaystyle \frac{\text{A}}{400}=\frac{18}{100}}$

${\displaystyle \frac{\text{A}}{400}\times 400=\frac{18}{100}\times 400}$

∴ A = 72.

∴ The number of schools adopted is 72.