Answer:
The tax savings are $1400 for paying $5000 in charity if the marginal rate is 28%.
Explanation:
As charity is tax deductible and as given that they are in the 28% marginal tax bracket the savings for charity are given as
Tax Saving=Tax Rate x Amount for Charity
Here
So the tax savings are
Tax Saving=Tax Rate x Amount for Charity
Tax Saving=28% x 5000
Tax Saving=0.28 x 5000
Tax Saving=$1400.
So the tax savings are $1400 for paying $5000 in charity if the marginal rate is 28%.