Mr$.$ James K$.$ Silber, an avid international investor, just sold a share of Nestl$,$ a Swiss firm, for SF$5,040.$ The share was bought for SF$4,200$ a year ago. The exchange rate is SF$2\mathrm{.}00$ per U$.$S$.$ dollar now and was SF$1\mathrm{.}86$ per dollar a year ago. Mr$.$ Silber received SF$160\mathrm{.}00$ as a cash dividend immediately before the share was sold. Compute the rate of return on this investment in terms of U$.$S$.$ dollars.