Victor cannot find the original record of his purchase four years ago of units of the Imperial Global Equity Income Pool Fund. The current statement from the fund shows that the total current value of the units is $47,567. From a mutual fund database, Victor found that the fund's rates of return for Years 1 to 4 have been -0.5%, 13.4%, 30.7%, and 12.5%, respectively.

a. What was Victor's original investment in the fund?

b. What was the dollar increase in the value of his investment in Year 3?