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In a class, the ratio of boys to girls is 3:2. If there are 30 boys, how many gi
Practice Questions
Q1
In a class, the ratio of boys to girls is 3:2. If there are 30 boys, how many girls are there?
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Questions & Step-by-Step Solutions
In a class, the ratio of boys to girls is 3:2. If there are 30 boys, how many girls are there?
Steps
Concepts
Step 1: Understand the ratio of boys to girls, which is 3:2. This means for every 3 boys, there are 2 girls.
Step 2: Identify how many boys there are in the class. In this case, there are 30 boys.
Step 3: Set up a proportion based on the ratio. Since the ratio is 3 boys to 2 girls, we can write it as 3/2.
Step 4: Use the number of boys to find the number of girls. We can set up the equation: (30 boys * 2 girls) / 3 boys.
Step 5: Calculate the number of girls. (30 * 2) / 3 = 60 / 3 = 20 girls.
Step 6: Conclude that there are 20 girls in the class.
No concepts available.
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