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The ratio of class A to class B is 5:4. If 9 people are transferred from class B, then class A is 3 / 2 more than class B. how many people are there in class B
Does 3 / 2 mean 2 / 3? If so, it should be written as 2 / 3
The number of class a remained unchanged
It turns out that the number of class B is that of class A: 4 / 5 = 4 / 5
Now, the number of class B is the same as that of class A: 1 (1 + 2 / 3) = 3 / 5
Number of class a = 9 (4 / 5-3 / 5) = 45 (person)
At this time, the number of people in class B = 45 (1 + 2 / 3) = 27 (people)
There are two classes a and B in the sixth grade of a school. The number of students in class A is 57 times that of class B. If three students are transferred from class B to class A, the number of students in class A is 45 times that of class B. how many students are there in class A and class B?
45 + 4-57 + 5 = 49 − 512 = 136; 3 △ 136 = 108 (people), 108 × 512 = 45 (people), 108-45 = 63 (people); answer: the original number of class A is 45, the original number of class B is 63
RELATED INFORMATIONS
- 1. The original ratio of class A and class B is 5:4. If nine people are transferred from Class A to class B, then the ratio of class B to class A is 5:4. How many people are there in each class?
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