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Sixth grade math brain problem! ! ! There is no equation solution! ! The task that the teacher taught me! ! Heroes, help.
Let the number of people in the first group be X, and the number of people in the other two groups be 2X (the number of people in the first group is 65438+ 0/2 of the number of people in the other two groups), so 3X=60, X=20, and the number of people in the first group is 20.

Similarly, if the number of people in the second group is X, the number of people in the other two groups is 3X (the number of people in the second group is 65438+ 0/3 of the number of people in the other two groups), and it is concluded that 4X=60 people, X= 15 people, and the number of people in the second group is 15 people.

The third group =60-20- 15=25 people.

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