There are 200 people in the two engineering teams. If 25% of them are transferred from team a to team B, the number of team B is 9 / 11 of that of team A. how many people are there in team a

There are 200 people in the two engineering teams. If 25% of them are transferred from team a to team B, the number of team B is 9 / 11 of that of team A. how many people are there in team a

Design: the engineering teams of Party A and Party B are respectively x, y
There are: x + y = 200
（x-25%x+y×25%）×9/11=y-y×25%+x×25%
The solution is x = 120, y = 80
So the first engineering team has 120 people

There are 200 people in the two engineering teams. If 25% of team a is transferred to team B, the number of team B is 11% of that of team A. how many people are there in team a

The number of the second team is 200 × 11 / (9 + 11) = 110
Number of team a: 200-110 = 90
The original number of team a = 90 (1-25%) = 120

There are 200 people in the two engineering teams. If one fourth of the number of team a is transferred to team B, the number of team B will be 2 / 9 more than that of team A. how many people does team a have

Let a have X people and B 200-x people
Draw out 1 / 4 of the number of team a and transfer to team B
A x * (1-1 / 4) = 3x / 4
B 200-3x / 4
The number of team B is 2 / 9 more than that of team a,
(200-3x/4)/(3x/4)=1+2/9=11/9
9(200-3x/4)=11(3x/4)
1800-27x/4=33x/4
15x=1800
x=120
So a had 120 people

Team a and team B jointly built a road. Team a built 513 of this road. How much less did team a build this road than team B?

1-513-513 = 813-513, = 313