A list of 42 numbers has an average (arithmetic mean) of 110.0. A second list of 58 numbers has an average of 150.0. What is the average of the 100 numbers in the two lists combined?
A list of 42 numbers has an average (arithmetic mean) of 110.0. A second list of 58 numbers has an average of 150.0. What is the average of the 100 numbers in the two lists combined?