Solve the problem.The following table shows the pricing schedule for a phone company's long-distance rates. Below is a portion of Andrea's long-distance call summary. Find the mean and median duration of the calls. 

A. mean: 38 min.; median: 29 min.
B. mean: 38 min.; median: 47 min.
C. mean: 43.5 min.; median: 38 min.
D. mean: 38 min.; median: 43.5 min.


Answer: D

Mathematics

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