1. The problem statement, all variables and given/known data At what rate of interest, compounded continuously, will a bank deposit double in value in 8 years? 2. Relevant equations None. 3. The attempt at a solution Q0e8r=2Q0 e8r=2 8r=ln(2) r=ln(2)/8 But the answer is (25/2)ln(2)%. How do I get the answer from there?