Coolbrook Company has the following information available for the past year:

	River Division			Stream Division
Sales revenue	$	1,211,000		$	1,813,000
Cost of goods sold and operating expenses		883,000			1,300,000
Net operating income	$	328,000		$	513,000
Average invested assets	$	1,090,000		$	1,590,000

The companys hurdle rate is 6.51 percent.

Required:

1. Calculate return on investment (ROI) and residual income for each division for last year.

2. Recalculate ROI and residual income for the division for each independent situation that follows:

a. Operating income increases by 9 percent.

b. Operating income decreases by 11 percent.

c. The company invests $251,000 in each division, an amount that generates $103,000 additional income per division.

d. Coolbrook changes its hurdle rate to 4.51 percent.