=+3 Suppose, during 2015, the market size for high-end kitchen rangehoods grew 3% in terms of number of units and all increases in market share (i.e. increases in the number of units sold greater than 3%) are due to Westwood’s product-differentiation strategy. Calculate how much of the change in operating profit from 2014 to 2015 is due to the industry market-size factor, cost leadership and product differentiation.