Problem $1-18($LO$.2,7)$

In $2023,$ Madden, who is single, has adjusted gross income of $$145,600,$ uses the standard deduction of $$13,850,$ and has $$131,750$ of

taxable income. Compute the following for Madden:

"Effective tax rate, using adjusted gross income" AGI: $$145,600$

I don't know why my answer is incorrect