The woman said, "Two people use a bowl of rice, three people use a bowl of soup and four people use a bowl of meat." How many people are there?

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The number of people is also a multiple of 2, 3 and 4. The least common multiple of 2, 3 and 4 is 12. If every 12 person is grouped into 1 group, we can know that every 12/2 = 6, 12/3 = 4, 12/4 = 3.