How do I find the residual income here? I'm missing only the residual income and nothing else to be done besides that.

Genmure Corporation is trying to analyze the results of three efficiency initiatives that were taken on the previous fiscal period. Below is data relating to these projects:
Factory Automation
Sales	$400,000
Operating Expenses	225,000
Income Tax Expense	30,000
Average Assets Invested	1,100,000
Re-Certify Labor Force
Sales	$290,000
Operating Expenses	265,000
Income Tax Expense	4,000
Average Assets Invested	125,000
Update Tools and Equipment
Sales	$142,000
Operating Expenses	48,000
Income Tax Expense	18,000
Average Assets Invested	500,000
Hurdle Rate:	12%
Required:
Determine the Margin, Turnover, Return on Investment, and Residual Income for each initiative.
Factory Automation
Margin	43.8%
Turnover	0.36
Return on Investment (ROI)	15.9%
Residual Income (RI)	$43,000
Re-Certify Labor Force
Margin	8.6%
Turnover	2.32
Return on Investment (ROI)	20.0%
Residual Income (RI)	$10,000
Update Tools and Equipment
Margin	66.2%
Turnover	0.28
Return on Investment (ROI)	18.8%
Residual Income (RI)	$34,000
Which initiative outperformed the others on the basis of Return on Investment?	Re-Certify Labor Force
Which initiative outperformed the others on the basis of Residual Income?	Factory Automation
Management is pleased with the results of the last year and is offering additional resources to continue the positive trend with the initiatives.
Additional Assets to Invest	$325,000
Increase to Sales	30%
Increase to Operating Expenses	15%
Required:
Recalculate the amounts with management's additional funding. Assume Income Tax remains the same.
Determine the Margin, Turnover, Return on Investment, and Residual Income for each initiative with management's additional funding.
Factory Automation
Sales	$520,000
Operating Expenses	258,750
Income Tax Expense	30,000
Average Assets Invested	1,425,000
Re-Certify Labor Force
Sales	$377,000
Operating Expenses	304,750
Income Tax Expense	4,000
Average Assets Invested	450,000
Update Tools and Equipment
Sales	$184,600
Operating Expenses	55,200
Income Tax Expense	18,000
Average Assets Invested	825,000
Factory Automation
Margin	50.2%
Turnover	0.36
Return on Investment (ROI)	18.3%
Residual Income (RI)	x
Re-Certify Labor Force
Margin	19.2%
Turnover	0.84
Return on Investment (ROI)	16.1%
Residual Income (RI)	x
Update Tools and Equipment
Margin	70.1%
Turnover	0.22
Return on Investment (ROI)	15.7%
Residual Income (RI)	x
If the manager for the labor force's performance uses ROI, would the manager accept the management's funding?	No
If the manager for the Tools and Equipment's performance uses Residual Income, would the manager accept the management's funding?	No
If the manager for Factory Automation's performance uses Return on Investment, would the manager accept the management's funding?	Yes
If the manager for Factory Automation's performance uses Residual Income, would the manager accept the management's funding?	Yes