1.4S Tawny makes a deposit into a bank account which credits inter- est at a nominal interest rate of 10% per annum, convertible sem- iannually. At the same time, Fabio deposits 1000 into a different bank account, which is credited with simple interest. At the end of 5 years, the forces of interest on the two accounts are equal, and Fabio's account has accumulated to Z. Determine Z