10. A Swiss bank converted 1 million Swiss francs to euros to make a euro loan to a customer when the exchange rate was 1.85 francs per euro. The borrower agreed to repay the principal plus 3.75 percent interest in one year. The borrower repaid euros at loan maturity and when the loan was repaid the exchange rate was 1.98 francs per euro. What was the bank's franc rate of return?( ( 6 point)