To determine how many females there would be in the class if there are 15 males, we can set up a ratio based on the given information that there are 5 females for every 3 males.
The original ratio of males to females is 3 males to 5 females. We can set up a proportion to find the number of females when there are 15 males.
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Start with the ratio of males to females: \[ \frac{\text{Males}}{\text{Females}} = \frac{3}{5} \]
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Let \( x \) be the number of females when there are 15 males: \[ \frac{15}{x} = \frac{3}{5} \]
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Cross-multiply to solve for \( x \): \[ 3x = 15 \times 5 \] \[ 3x = 75 \]
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Divide both sides by 3: \[ x = \frac{75}{3} = 25 \]
So, if there are 15 males in the class, there would be 25 females.
Here's the updated ratio table:
| Males | Females | |-------|---------| | 3 | 5 | | 15 | 25 |
Thus, the answer is that there would be 25 females in the class.