The Jasmit Jean Company sells demin jeans and has experienced declining sales over the past 2 years due to the Covid Pandemic. Your Vice President of Marketing has asked you for the average sale per customer as part of data-collection to determine marketing strategies to address this sales decline.

Your marketing team has extracted the following data from your database: Your company has 1,000 retained customers, with total revenues of $150,000 in Year 1; 400 retained customers in Year 2 with total revenues of $40,000; and 50 retained customers in Year 3 with $50,000 in total revenue.

What is the average sale per customer over the given 3 year period?