Consider the following three-person portfolios consisting of investments in four stocks:

Stock	Beta	Peter's investment	Paul's Investment	Maria's investment
Enie	1.3	2,500	5,000	10,000
Meenie	1.0	2,500	5,000	10,000
It will pass	0.8	2,500	5,000	-5,000
Moe	-0.5	2,500	-5,000	-5,000

Required: Assuming the risk-free rate is 4% and the expected market return is 12%, calculate the required return on Maria's portfolio.