The manager of the ice cream shop noticed that 90% of all club members brought along a family member who spent an average of $18 in the shop. The tax on their bill was 5.5%. A, What was the total amount spent by the family members in one year?

B, What would each family member have to spend, on average, to generate $5,000 in income before sales tax?

C, What would each family member's average bill be with sales tax?