Damn math - Training Enrollment Network

Damn math

Let the number of people in the first, second and third workshops be x, y and z respectively, and the total number of people is a.

Formula: y/a = 0.25;

(y-z)/y = 1/5；

(x-z)/z=3/ 10 .

Because the first workshop is 156, it is calculated that there are 144 people in the second workshop and 120 people in the third workshop, totaling 420 people.

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