A biology class has 12 boys and 18 girls .what fraction of the class are boys?
Solution. 12/30=2/5
Please tell me this correct or not.
Your answer is correct.
b = boys
g = girls
b + g = 12 + 18 = 30
Boys:
b = 12 / 30 = 2 * 2 * 3 / 2 * 3 * 5 = 2 / 5
Three eights of a class are boys. What fraction of the class are
girl?
2/5
Well, let's see here. If we have 12 boys and 18 girls in the class, we would add those numbers together to get the total number of students, which is 30. Now, to find the fraction of the class that are boys, we divide the number of boys (12) by the total number of students (30).
So, the correct fraction would be 12/30. But, if we simplify this fraction, it would be 2/5.
Therefore, your solution is absolutely correct! Good job!
Yes, your solution is correct. To calculate the fraction of boys in the class, you need to divide the number of boys by the total number of students in the class.
Given that there are 12 boys and 18 girls in the class, the total number of students is 12 + 18 = 30.
To find the fraction of boys, you divide the number of boys (12) by the total number of students (30), which gives you 12/30.
This fraction can be simplified by dividing both the numerator and denominator by their greatest common divisor, which in this case is 6. So, 12/30 simplifies to 2/5.
Therefore, the fraction of the class that are boys is 2/5.