In 20x2,a firm changed from the straight-line (SL) method of depreciation to double declining balance (DDB) to conform to long-standing industry practice.The firm's 20x1 and 20x2 comparative financial statements will reflect which method or methods. 
Definitions:
Statutory Law
Laws that have been formally written and passed by legislative bodies.
Law of Contracts
The body of law addressing the formation, interpretation, and enforcement of agreements between parties.
Common Law
A system of law based on precedent and customs, arising from the decisions of courts and similar tribunals rather than from statutes.
Proper Form
The correct or acceptable format or procedure that is required or established by law or policy.
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