Chapter 7.3, Problem 1CYU

To determine

Calculate percent of 72 equivalents to 18.

Answer to Problem 1CYU

18 is 25% of 72.

Explanation of Solution

Given:

X% of 72 = 18

Calculations:

Assume x be the percent of 72 equal to 18

Suppose 72 is 100 %

Thus,

  $\begin{array}{l}100\%=72\\ x\%=18\end{array}$

Equating above pairs we get,

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

Conclusion:

Therefore, we are able to calculate percent of 72 equivalents to 18 using simple percent proportion.