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Arnie. citizen who uses the calendar year as his tax year and the cash method of accounting, operates a sole proprietorship in Country Z. In Year 1, he reports 500,000 dubles of pretax profits. On June 1 of Year 2, he pays Country Z income taxes of 150,000 dubles for calendar Year 1. Duble-U.S. dollar exchange rates on various dates in Year 1 and Year 2 are as follows: