the ratio of boys to girls in a class is 5:6. There are 25 boys in the class. How many are girls?
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Ratio = 5:6.
Let the common multiple be x.
Then ratio = 5x:6x.
Given 5x=25.
So, x=25/5.
x=5.
So the number of girls will be 6(5)=30.
Therefore, there are 30 girls in the class and the total number of students is 55.
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