Answer:
1.10
Explanation:
The computation of portfolio's beta is shown below:-
= Stock A Beta × Invested in Stock A ÷ Total value + Stock B Beta × (Total value - Invested in Stock A) ÷ Invested in Stock A
= 0.75 × $47,500 ÷ $100,000 + 1.42 × ($100,000 - $47,500) ÷ $100,000
= 0.75 × $47,500 ÷ $100,000 + 1.42 × $52,500 ÷ $100,000
= 0.75 × 0.475 + 1.42 × 0.525
= 0.35625 + 0.7455
= 1.10175
or
= 1.10
Therefore for computing the portfolio beta we simply applied the above formula.