MedTech Ltd.'s financials include:

• Cash: $90,000
• Marketable Securities: $20,000
• Accounts Receivable: $55,000
• Inventory: $80,000
• Prepaid Expenses: $8,000
• Accounts Payable: $28,000
• Short-Term Debt: $18,000
• Long-Term Debt: $120,000
• Common Stock: $200,000
• Retained Earnings, beginning of year: $95,000
• Sales Revenue: $500,000
• Cost of Goods Sold: $300,000
• Operating Expenses: $140,000
• Interest Expense: $10,000
• Tax Expense: $15,000

Requirements:

1. Compute MedTech Ltd.'s net income.
2. Calculate the current ratio.
3. Determine the quick ratio.
4. Find the ending retained earnings.