A person invests in 2 securities A and B in two years at different rates. The annual
rates of return in are as follows:
Year 1. 10. 15
Year2. 12. 16
Using matrix notation, determine:
(i) Annual return of each year if he invests 50,000 and 80,000 in the securities for two years
(ii) Investment in each security for 2 years if he receives returns of 40,000 and 44,000 in two years respectively.