Selex and Medex are two competitors in the same industry. Both companies produce computer hardware. Selex expects a 20% increase in its operating income if its sales were to rise by 10%. On the other hand, Medex has a contribution margin ratio of 50%, total fixed costs of $500,000 and sales revenue of $2,500,000. If both companies are expecting a 15% increase in sales as the result of the expansion in the market, how much will their operating income change?