Quarterly Sales Comparison of Products

The following bar graph shows the quarterly sales (in thousands of dollars) of three different products (Product X, Product Y, and Product Z) over a one-year period. Each bar represents the sales for each product during the first two quarters of the year.

Quarterly Data:

Product X: Q1: 200, Q2: 300

Product Y: Q1: 250, Q2: 400

Product Z: Q1: 300, Q2: 350

Based on the data represented in this graph, which product had the highest total sales over the two quarters?