Answer:
Betty's Return on investment = 56.41%
Explanation:
Maximum contribution by the company = 4% of 100,000 = 4000 USD.
Employer Contribution = 50% x 15,500.
= 7,750
Total contributed amount in USD = Betty contribution + Company's contribution
= 15,500 + 4000
= 19500 USD.
Betty 401(k) plan account had 50,000 USD in it at the beginning means, it is the opening balance in the acount.
Opening amount = 50,000 USD
Amount Earned = 100,000 - 50,000 - 19500 .
= 30500 USD .
Betty's Return on investment = (Gain - cost)/cost
= (30500 - 19,500) / (19,500)
= 56.41%