The traditional DuPont system is given as:
ROE = (net profit margin)(asset turnover)(leverage ratio)
Solving for the net profit margin yields:
0.12 = (net profit margin) × (2) × (1.5)
0.04 = (net profit margin)
Recognizing that the net profit margin is equal to net income / revenue we can substitute that relationship into the above equation and solve for net income:
0.04 = net income / revenue = net income / $1,000,000
$40,000 = net income.