There are nine firms in industry X. The first firm's sale is $300,000, the second firm's sale is $250,000, the third firm's sale is $200,000, the fourth firm's sale is $150,000. There are 5 other firms, each generates sales of $80,000. 1. Calculate two measures of concentration. 2. If the second and third firms merged together, recalculate the two measures of concen- tration and determine whether the merger caused a higher concentration or not