Chapter 7.3, Problem 36HP

To determine

To solve: a real-world problem involving percent.

Answer to Problem 36HP

24% of the cookies states begin with A,I,O or U .

Explanation of Solution

Calculation:

Real-world problem:

A boy scout sold 105 boxes of cookies. Of the boxes sold, 25 were peanut butter cookies.

  $\begin{array}{l}\frac{25}{105}=\frac{p}{100}\text{ Write the percent proportion}\\ 25\times 100=105\times p\text{ Find the cross product}\\ \text{ 2500=105}p\text{ Multiply}\\ \frac{2500}{105}=\frac{105p}{105}\text{ Divide each side by 105}\text{.}\\ \text{ 24}=p\text{ Simplify}\end{array}$

Conclusion:

So, 24% of the cookies states begin with A,I,O or U .