Suppose that you buy, and one year later sell, a foreign $($British$)$ bond under the following circumstances:

When you buy the bond the exchange rate is $$2\mathrm{.}00=1.$

You pay $45($ $$90\mathrm{.}00)$ for the British bond.

You sell the bond for $50.$ No interest payment was expected or received.

When you sell the bond, the exchange rate is $$2\mathrm{.}25=1.$

What is your gain or loss in dollars? $ $.($Round your response to the nearest penny and include a minus sign for a loss.$)$