*Please show work and explain*

Given the following information:

Expected return on Stock Fund A	.12 (12%)
Standard deviation of the return of Stock Fund A	.20 (20%)
Expected return on Bond Fund B	.07 (7%)
Standard deviation of the return of Bond Fund B	.10 (10%)
Correlation coefficient of the returns between Fund A and Fund B	.3

What is the standard deviation of a portfolio that consists of 70% of the portfolios total funds in Stock Fund A and 30% of Bond fund B?

Show your answer in percentage terms to two places to the right of decimal