Mr. Signet tracked the number of Calories he consumed from drinking tea and coffee over three weeks. In the first week, he drank 4 cups of tea and 5 cups of coffee, for a total of 35 Calories. In the second week, he drank 4 cups of tea and 3 cups of coffee, for a total of 25 Calories. In the third week, he drank 3 cups of tea and 2 cups of coffee. If each cup of tea contained the same number of Calories, and each cup of coffee contained the same number of Calories, how many Calories did he consume from drinking tea and coffee in the third week?
