Of 30 theater tickets sold, 20 tickets were sold at prices betwee

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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

A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案：B

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