Final answer:
The Osaka division has an ROI of 21% and a residual income of $60,000, while the Yokohama division has an ROI of 18% and a residual income of $120,000.
Step-by-step explanation:
Part A: Calculating Return on Investment (ROI)
To calculate the ROI for each division, we need to compute two components: the margin and the turnover. Margin is calculated by dividing the Net Operating Income by Sales, and the Turnover is calculated by dividing Sales by Average Operating Assets. We will then multiply the Margin by the Turnover to get the ROI.
For the Osaka division:
Margin = Net Operating Income / Sales = $210,000 / $3,000,000 = 0.07 or 7%
Turnover = Sales / Average Operating Assets = $3,000,000 / $1,000,000 = 3
ROI = Margin × Turnover = 7% × 3 = 21%
For the Yokohama division:
Margin = Net Operating Income / Sales = $720,000 / $9,000,000 = 0.08 or 8%
Turnover = Sales / Average Operating Assets = $9,000,000 / $4,000,000 = 2.25
ROI = Margin × Turnover = 8% × 2.25 = 18%
Part B: Calculating Residual Income
Residual Income is calculated by subtracting the product of the Minimum Required Rate of Return and the Average Operating Assets from the Net Operating Income. A 15% minimum required rate of return is given.
For the Osaka division:
Residual Income = Net Operating Income - (Minimum Required Rate of Return × Average Operating Assets)
Residual Income = $210,000 - (15% × $1,000,000) = $210,000 - $150,000 = $60,000
For the Yokohama division:
Residual Income = Net Operating Income - (Minimum Required Rate of Return × Average Operating Assets)
Residual Income = $720,000 - (15% × $4,000,000) = $720,000 - $600,000 = $120,000