Answer:
Devin will donate $67.5 to charity.
Explanation:
Given:
Devin made 30 custom t-shirts to sell.
He will donate 1/8 0f his total sales to a local charity.
He sold all 30 t-shirts for $18 each.
Now, to find the amount Devin donate to charity.
Total number of t-shirts = 30.
Each t-shirts sold at = $18.
So, total amount of 30 t-shirts sold:
![30* 18](https://img.qammunity.org/2021/formulas/mathematics/high-school/nt8m39t12wcoihkymm1y9qs79fj5fe6a8c.png)
![=\$540.](https://img.qammunity.org/2021/formulas/mathematics/high-school/r83lsuh9xft6ajh22lagm2klsn1y6xvi7h.png)
As, Devin will donate
of his total sales to a local charity.
Now, to get the amount he will donate to charity:
![(1)/(8) \ of\ \$540\\\\=(1)/(8) * 540\\\\=(540)/(8)\\\\=\$67.5.](https://img.qammunity.org/2021/formulas/mathematics/high-school/xw1qwz6dqsw3cr68c2c2d0h4hmvmp02l1a.png)
Therefore, Devin will donate $67.5 to charity.