Answer: (a) 12.5%;
(b) $153 million
Explanation:
Given that,
Campus Division of All-States Bank,
Assets = $1,800 million
Division profits = $225 million
Cost of capital = 4 percent
(a) Divisional ROI = [tex]\frac{Profit}{Assets}[/tex]
               = [tex]\frac{225}{1,800}\times100[/tex]
               = 12.5%
(b) Divisional RI = Profits - Assets × cost of capital
             =  $225 million - $1,800 million × 0.04(4%)
             = $225 million - $72 million
             = $153 million