Question

Use the percent proportion to find each number.

18 is what percent of 72.

Short answer

18 is 25% of 72.

Step-by-step solution

Step 1. Concept of percentage.

Percent means parts per hundred. It is indicated by the symbol %.

To express any number to a fraction that is in percent form, divide that number by 100 and drop that percent sign.

Step 2. Formula used.

In order to find, a number, x is how many percent of another number y, use the below formula

$\frac{x}{y}\times 100\%$

Step 3. Find the percent of 72 which is 18.

To find 18 is what percent of 72, use the above formula and divide 18 by 72 and then multiply the result with 100 as shown below:

$\begin{array}{l}\frac{18}{72}\times 100\%\\ =0.25\times 100\%\\ =25\%\end{array}$

Therefore, 18 is 25% of 72.