An investor puts 49.00% of his investment into Cisco Systems, and the remaining 51.00% into Apple Computer. The standard deviation on Cisco Systems stock is 31.00%, while the standard deviation on Apple Computer is 25.00%. Find the standard deviation of this portfolio if the correlation between the two stocks is 0.67.

Answer format: Percentage Round to: 2 decimal places (Example: 9.24%, % sign required. Will accept decimal format rounded to 4 decimal places (ex: 0.0924))