Average Spending Per Customer Analysis

A marketing firm analyzed customer purchase data from its online store for the last year. The results, categorized by age group and the total amount spent, are summarized in the table below:

Age Group | Total Amount Spent ($)

18-24 | 45,000

25-34 | 90,000

35-44 | 75,000

45-54 | 60,000

55+ | 30,000

The total amount spent by customers in each age group is noteworthy. Based on this data, what is the average amount spent by a customer across all age groups if the data indicates that the number of customers in each age group is as follows: 600 (18-24), 1000 (25-34), 800 (35-44), 700 (45-54), 400 (55+)?