Step 1: Understand Quick Ratio:
Quick Ratio (or Acid-Test Ratio) = Quick Assets / Current Liabilities.
Quick Assets = Current Assets - Inventories - Prepaid Expenses.
Given Quick Ratio = 1:1, meaning Quick Assets = Current Liabilities. Let's assume QA = CL = Rs 1,00,000.
Step 2: Analyze Effect of Each Transaction:
(A) Cash received from debtors: Cash (Quick Asset) increases, Debtors (Quick Asset) decrease by the same amount. No change in total Quick Assets. Current Liabilities remain unchanged. Ratio remains 1:1.
(B) Sold goods on credit: Debtors (Quick Asset) increase. Inventories (Non-Quick Asset) decrease. Total Quick Assets increase. Current Liabilities remain unchanged. Numerator increases, denominator stays same. Ratio increases ($>$ 1:1).
(C) Purchased goods on credit: Inventories (Non-Quick Asset) increase. Creditors (Current Liability) increase. Quick Assets remain unchanged. Current Liabilities increase. Numerator stays same, denominator increases. Ratio decreases ($<$ 1:1).
(D) Purchased goods on cash: Inventories (Non-Quick Asset) increase. Cash (Quick Asset) decreases. Quick Assets decrease. Current Liabilities remain unchanged. Numerator decreases, denominator stays same. Ratio decreases ($<$ 1:1).
Conclusion:
Selling goods on credit increases Debtors (a quick asset) while decreasing Inventory (not a quick asset), thus increasing total Quick Assets. With Current Liabilities unchanged, the Quick Ratio increases.