In a certain class, the ratio of boys to girls is 3:2. If there are 30 boys, how

In a certain class, the ratio of boys to girls is 3:2. If there are 30 boys, how many girls are there?

In a certain class, the ratio of boys to girls is 3:2. If there are 30 boys, how many girls are there?

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. We can write it as 3 (boys) / 2 (girls) = 30 (boys) / x (girls).
Step 4: Cross-multiply to solve for x. This means 3 * x = 2 * 30.
Step 5: Calculate 2 * 30, which equals 60. So now we have 3x = 60.
Step 6: Divide both sides of the equation by 3 to find x. So, x = 60 / 3.
Step 7: Calculate 60 / 3, which equals 20. Therefore, there are 20 girls in the class.

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