21-16. The actual sales and purchases for White Inc. for September and October 2010 along with its forecast sales and purchases for the period November 2010 throueh April 2011, follow. Year 2010 2010 Purchases $220,000 250,000 240,000 200,000 180,000 210,000 200,000 190,000 Month September October Sales $310,000 350,000 2010 November 270,00 2010 December 2011 January 2011 February 2011 March 2011 April 260,000 240,000 280,000 300,000 350,000