Problem 11-13 More Portfolio Variance (LO4, CFA3)

The expected return and standard deviation of a portfolio that is 30 percent invested in 3 Doors, Inc., and 70 percent invested in Down Co. are the following:

		3 Doors, Inc.			Down Co.
Expected return, E(R)		18	%		11	%
Standard deviation,		51			40

What is the standard deviation if the correlation is +1? 0? 1?(Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. )