Chapter 7.3, Problem 27PPS

To determine

To solve: the given problem by using the percent proportion

Answer to Problem 27PPS

The required answer is 45

Explanation of Solution

Given:

45 is what percent of 15?

Calculation:

Let p represent the percent.

  $\begin{array}{l}\frac{\text{45}}{\text{15}}\text{=}\frac{\text{p}}{\text{100}}\text{ Write the percent proportion}\\ \text{45×100=p×15 Find the cross product}\\ \text{4500=15p Multiply}\\ \frac{\text{4500}}{\text{15}}\text{=}\frac{\text{15p}}{\text{15}}\text{ Divide each side by 15}\\ \text{300=p Simplify}\end{array}$

So, 45 is 300% of 15.

Conclusion:

Hence, 45 is 300% of 15.