Answer:
before adjustment:
HRI 13%
LRI 15.8%
difference 2.8%
after adjustment
HRI 10.5% ↓2.5%
LRI 12.9%  ↓2.9%
difference 2.4%
Explanation:
we will valuate the CAPM for both companies:
before adjustment
[tex]Ke= r_f + \beta (r_m-r_f)[/tex] Â
risk free 0.06
market rate 0.13
premium market =(market rate - risk free) 0.07
LRI: beta(non diversifiable risk) 1 Â
[tex]Ke= 0.06 + 1 (0.07)[/tex] Â
LRI Ke 0.13000
HRI ke: beta(non diversifiable risk) 1
[tex]Ke= 0.06 + 1.4 (0.07)[/tex]
HRI Ke   0.15800
With the changes:
[tex]Ke= r_f + \beta (r_m-r_f)[/tex] Â
risk free 0.045
market rate 0.105
premium market =(market rate - risk free) 0.06
LRI: beta(non diversifiable risk) 1
[tex]Ke= 0.045 + 1 (0.06)[/tex]
LRI Ke 0.10500
HRI beta(non diversifiable risk) 1.4
[tex]Ke= 0.045 + 1.4 (0.06)[/tex]
HRI Ke 0.12900