Answer:
The marginal tax rate for the additional $6000 is 15.58%.
Explanation:
Arlene has a taxable income of $34,000.
Her tax liability is currently $4636.
Her income is to be increased by $6000.
Her tax liability will increase to $5571.
Marginal tax rate
= [tex]\frac{change\ in\ tax}{change\ in\ taxable\ income}[/tex]
= [tex]\frac{5571 - 4636}{6000}[/tex]
= [tex]\frac{935}{6000}[/tex]
= 0.1558
So the marginal tax rate is 15.58%.
