# Math

There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of boys to girls to remain the same?

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1. What do you think?

I'll give you a hint: whenever you add something to one side, in order to keep the difference equal youuuuuu-?

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2. find the common ratio e.g if they gave 20:10 the ration would be 10:5

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