Answer:
The percent of tax Edgar was charged is 8%.
Explanation:
Given:
Edgar purchased an item from a store. The price of the item was $20.00. After tax was included, the total price of the item was $21.60.
Now, to find the percent tax edgar charged.
The price of item = $20.00.
The price of item included with tax = $21.60.
So, the amount of tax is:
![21.60-20.00](https://img.qammunity.org/2021/formulas/mathematics/high-school/5vyh602mxg6b9775ue070d58fjm0xxd4bf.png)
![=\$1.60.](https://img.qammunity.org/2021/formulas/mathematics/high-school/lr2griimes5ieaypnhclfaeqruykl4k6a3.png)
Thus, the tax = $1.60.
Now, to get the percent of tax:
![(1.60)/(20.00) * 100](https://img.qammunity.org/2021/formulas/mathematics/high-school/urm1vnumgoc324zjz3uvcfvp3v7x2uq9hc.png)
![=0.08* 100](https://img.qammunity.org/2021/formulas/mathematics/high-school/1m7q9vg46jp2gl4hlnpav36lurb53b9xms.png)
![=8\%.](https://img.qammunity.org/2021/formulas/mathematics/high-school/ne0d8eoe4to3t56d1apvwo29pjvnpx92mm.png)
Therefore, the percent of tax Edgar was charged is 8%.