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There are 84 students in class A and class B, 57 students in 5 / 8 of class A and 3 / 4 of class B
Solution: if there are x people in class A, then there are (84-x) people in class B
5/8x+3/4*(84-x)=57
5/8x+(63-3/4x)=57
63-1/8x=57
1/8x=6
x =48
Class B: 84-48 = 36
A: there are 48 students in class A and 36 students in class B
The number of group A is 1 / 3 more than that of group B. later, nine people were transferred from group A to group B. at this time, the number of group B is 4 / 5 more than that of group A?
Please answer with arithmetic!
It turns out that a is the total number of a and B
（1＋1/3）÷（1＋1/3＋1）＝4/7
Now a is the total of a and B
1÷（1＋4/5＋1）＝5/14
Jointly owned by Party A and Party B
9 (4 / 7-5 / 14) = 42
A: Yes
42 × 4 / 7 = 24 persons
B: Yes
42-24 = 18
The number ratio of group A and group B of the school sports team is 5:3. Four people are transferred from team a to team B, and the number ratio is 5:3. How many people are there in the sports team?
The ratio is 3:2, not 5:3
Parity A: Hello! Is there something wrong with this problem? The ratio of a to B is 5:3, and the ratio of a to B is 5:3. The ratio of B to a is 5:3. If so, the way to solve the problem is as follows: 1
The ratio of the number of people in workshop a and workshop B is 5:3. If 22 people are transferred from workshop a to workshop B, the ratio of the number of people in workshop a and workshop B is 3:4
How many people are there?
The number of people in workshop a and workshop B is 5x and 3x respectively,
(5x-22):(3x+22)=3:4
4(5x-22)=3(3x+22)
20x-88=9x+66
11x=154
x=14
5x=5*14=70,3x=3*14=42
So there are 70 people in workshop a and 42 people in workshop B
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