Answer:
The required proportion is
.
Explanation:
Consider the provided information.
The price of a recipe-book was reduced from $24.50 to$17.95.
The original price is 24.50
Reduced price is 17.95.
Let p represents the percent decrease in price of the book.
![\text{Percent decrease}=\frac{\text{Original price-Reduced price}}{\text{Original price}}* 100](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5v6wpkux2atwi2o50q9h3djkpcenz7qxdd.png)
Now substitute the respective values in the above formula.
![p=(24.50-17.95)/(24.50)* 100](https://img.qammunity.org/2020/formulas/mathematics/middle-school/mvz2sltb3xy5wo1ifexdtt23n73kem15um.png)
![(p)/(100)=(24.50-17.95)/(24.50)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/k9kyvcu1pthzqny6pquwsyt5viybtze36y.png)
Hence, the required proportion is
.