Answer:
The return on investment for Investment Center B is of 26.92%.
Step-by-step explanation:
The general formula for calculating the return on investment (ROI) is:

In this exercise the cashflow is given by the yearly income from each investment, while the asset data gives us the value of the investments.
For investment center A we have that:
ROI =
= 17.29%
While for investment center B we have:
ROI =
= 26.92%
Since we’re only interested in the affairs of investment center B we use the results we have obtained from the second equation to answer the question: the return on investment for the investment center B is of 26.92%.