Answer:
after-tax return in dollars: 3.8
after-tax return rate: 6.91%
Explanation:
the gain are the 4 dollars dividends.
We will apply the tax rate to the dividends:
4 x 30% = 1.2
then we calcualte the after tax return in dollars: 4 - 1.2 = 3.8
Now the rate of return after-tax will be:
return / investment
3.8/55 = 0.06909090 = 6.91%