A marketing manager analyzed the sales data of two competing products, Product X and Product Y, over the same time period. The data indicates the following:
1. Product X had total sales of $400,000 over the last year.
2. The average selling price of Product X was $50, while the average selling price of Product Y was $40.
3. The total sales of Product Y were 10% more than the total sales of Product X.
Based on this information, compare the total number of units sold for Product X versus Product Y.