Acompany's 2012 sales margin of 5% lower than in 2011, the equity multiplier increased by 10%, total turnover increased by 2%, the net profit margin of a company's equity in 2012 is how much higher than in 2011?

The purchasing agent for a company that assembles and sells air-conditioning equipment in a latin american country noted that the cost of compressors has increased significantly each time they have been reordered. the company uses an eoq model to determine order size. what are the implications of this price escalation with respect to order size? what factors other than price must be taken into consideration?