• Company A has 35,000 units sold at $5.00/unit. It sold to 7,000 households in market size of 84,000.
• Company B has 12,000 units sold and revenues of $54,000 for these units. It sold to 3,000 households in market size of 21,000.
• Company C has 14,000 units sold at $5.50/unit. The average household purchase was 2 units. Its market size of 105,000.
• Company D has 5,000 units sold at $6.00/unit. It sold to 833 households in market size of 5,000.
• Company E has 22,000 units sold and revenues of $126,500 for these units. It sold to 5,500 households in market size of 22,000
• Company E has 22,000 units sold and revenues of $126,500 for these units. It sold to 5,500 households in market size of 22,000

1. What is the volume (unit) market share for company A?

2. What is the three firm concentration revenue ratio value?

3. What is the herfindahl unit index score value?

4. What is the market penetration percentage value for company c?

5. When seeking sales growth by acquiring existing category users from their competitors, what is the market penetration share percentage for company d?