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The ratio of boys to girls in the band is 2:3. If there are 21 girls in the band,how many are boys?

Sagot :

Divide 21 by 3 (since the ratio is 2:3). You'll get 7 right? Then multiply 7 by 2 (back to the ratio which is 2:3). So, the number of boys is 14. Boys: 7+7 = 14 : Girls: 7+7+7 = 21