Answer:
the portfolio's beta is 0.9
Explanation:
The portfolio’s beta is a weighted average of the individual security betas as follows:
= [($30,000 / $100,000 ) * 1.60] + [($70,000 / $100,000) 0.60]
= [$0.3 * 1.6] + [$0.7 * 0.6]
= 0.48 + 0.42
= 0.9
So, the portfolio's beta = 0.9