Problem

Survey An independent survey agency was hired by the Metropolitan Transit Authority (MTA)...

Survey An independent survey agency was hired by the Metropolitan Transit Authority (MTA) to find out how people commuted to their jobs. The agency interviewed 1000 commuters and submitted the following report: 631 people came to work by car, 554 people came to work by bus, and 759 came to work by subway. Also, 373 people came to work by a combination of car and bus, 301 people came to work by bus and subway, and 268 people came to work by car and subway, while 231 people used all three means of transportation to get to work. The MTA refused to accept the report, stating that it was inaccurate. Why?

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Solutions For Problems in Chapter 2.6