Answer: 12.16%
Explanation:
Return on investment is used to know how efficient and investment is. Based on the information given in the question, the ROI will be:
ROI = [ending value of investments - (the beginning investment value + savings)]/ the beginning investment value
= $170,000 - ($125,000 + $25000 + $4800)/$125,000
= $170,000 - $154800/$125,000
= $15,200/$125,000
= 0.1216
= 12.16%