Increased number of trainees - Education and Training Encyclopedia

Increased number of trainees

Let the original number of people be x and the later number be 2x.

From the meaning of the question: 3000x? 48002x=40

Solve the equation: x= 15

After investigation, x= 15 is the solution of the original fractional equation, which accords with the meaning of the question.

A: The original number was 15.

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