Of 30 theater tickets sold, 20 tickets were

Of 30 theater tickets sold, 20 tickets were sold at prices between $10 and $30 each and 10 tickets were sold at prices between $40 and $60 each. Quantity A: The average (arithmetic mean) of the prices of the 30 tickets Quantity B: $50 Quantity A is greater., Quantity B is greater., The two quantities are equal., The relationship cannot be determined from the information given.