Answer:
the after tax return on the investment is 6.40%
Step-by-step explanation:
5% interest on the face value: 5,000 x 5% = 250 this interest are tax exempt.
capital gain:
4,975 - 4,900 = 75
75 x 15% = 11.25
net return: 75 - 11.25 = 63.75
total return: 250 + 63.75 = 313.75
investment 4,900
313.75 / 4900 = 0,064030 = 6.40%