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QUESTION
According to the table, when Tom and Jane get their first electric stapler their productivity increases by 240 envelopes per hour, but when they get
According to the table, when Tom and Jane get their first electric stapler their productivity increases by 240 envelopes per hour, but when they get their second electric stapler their productivity increases by only 120 envelopes per hour. This is an example of which of the following?
