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sleet_krkn [62]
3 years ago
10

The ratio of boys to girls in home room is 2:3. If there are 8 boys how many girls are there .

Mathematics
2 answers:
Anton [14]3 years ago
7 0

Answer:

Step-by-step explanation:

12 girls

which mean 1 ratio = 4

2 ratio = 8

which means 3 ratio must = 12

Serhud [2]3 years ago
6 0

Answer:

12 girls

Step-by-step explanation:

multiply 8 by 3/2 to get 12.

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Answer: Choice A

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===================================================

Explanation:

We have the template \frac{P}{Q} = \frac{R}{S} which cross multiplies to PS = QR

So if \frac{3}{4} = \frac{4}{5} was true, then 3*5 = 4*4 must be true as well, and vice versa.

The left side 3*5 turns into 15, while the right hand side 4*4 becomes 16. The 15 and 16 don't match up.

In short, 3*5 = 4*4 turns into 15 = 16 which is a false statement. So the original claim that \frac{3}{4} = \frac{4}{5} is also false.

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