Question
The total number of dumplings produced by Machine K and Machine L was 457. The total number of dumplings produced by Machine K and Machine M was 561. The total number of dumplings produced by Machine L and Machine M was 476. Find the average number of dumplings produced by 3 machines.
3 m

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The total number of dumplings produced by Machine K and Machine L was 457. The total number of dumplings produced by Machine K and Machine M was 561. The total number of dumplings produced by Machine L and Machine M was 476. Find the average number of dumplings produced by 3 machines.