The following are the returns of share Hangseng Ltd for the last four years: 

Year           Share price ($)         Dividend per share ($) 

2017              100                                     2.5 

2018              105                                     2.5 

2019              115                                     2.5 

2020             107                                        3 

Mr Halder wishes to build a portfolio by investing 35% in Hangseng Ltd and 65% in Haldyn Ltd. The expected return and standard deviation of Haldyn Ltd are 15% and 6% respectively. The covariance between Hangseng Ltd and Haldyn Ltd is -10. 

Calculate the expected return and standard deviation of Mr Halder's portfolio.