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aleksandrvk [35]
3 years ago
6

What must be added to a+2b to get b-2a

Mathematics
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

idk

Step-by-step explanation:

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Step-by-step explanation:

This is a dense question. Let's look at it piece by piece:

1. The ratio of boys to students in the class is 10/25. If there are 25 students and 15 girls, that leaves 10 boys.

2. The question says that the ratio is in proportion of boys to total students in the school. "In proportion" in this case means that if we convert 10/25 to a fraction with numerator 390, the denominator is the amount of students in school.

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4. This means 975 students go to the school.

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