Walmart Inc. has decided to evaluate the financial impact of an upcoming change in accounting policy. The change will result in an additional $10,000,000 expense for the fiscal year ending January 31, 2025. The following financial data is available for the fiscal year ending January 31, 2024:

• Net income before policy change: $50,000,000
• Sales revenue: $300,000,000
• Total expenses (excluding policy change): $250,000,000

Calculate the net income after the policy change and determine the net profit margin ratio for Walmart Inc. for the fiscal year ending January 31, 2025.