How do I find the beta for each of the two stocks?

A B C D E F. G H I 3 4 5 6 7 8 9 10 11 12 13 Finding | The Northern Peninsula Stock market has only two listed stocks. Big minin and Shallow mining . The market portfolio is composed of 40% Big Mining and 60% Shallow Mining. Using the data below, find the B for each of the two stocks. 14 15 16 NORTHERN PENINSULA STOCK MARKET Big Shallow Mining Mining Expected return 15% 25% Return standard deviation 25% 40% Covariance of returns 0.05 17 18 19 20 21 22 Market portfolio Weight of Big Mining Weight of Shallow Mining Expected return, E(M) Variance, OM Standard deviation, OM 23 24 25 26 27 28 29 30 31 32 BBigMining Bshallow Mining