There are are 20% more girls than boys in the senior class.What percentage of the seniors are girls?
In a sale a shop reduced the prices of all CDs by 15%. For a CD usually costing $12, what is the reduced price?
Girl fraction = G/(G + B)
= G/(G + (G/1.2)) =
= 1.2G/2.2G = 54.545 %
Boy fraction = 45.454 %
85% of $12
15/100 * $12
$ 1.8
Jennifer, that answer IS the discount. The question asks for the price AFTER the discount is taken. What do you think?
To find out what percentage of the seniors are girls, we first need to determine the ratio of girls to boys in the senior class. We are given that there are 20% more girls than boys.
Let's assume there are x boys in the senior class. Since there are 20% more girls, the number of girls would be 1.2x (which is x + 20% of x).
The total number of students in the senior class would be x (boys) + 1.2x (girls) = 2.2x.
To find the percentage of girls in the class, we divide the number of girls (1.2x) by the total number of students (2.2x), and then multiply by 100 to get a percentage.
Percentage of girls = (1.2x / 2.2x) * 100%
Simplifying, we cancel out the 'x' terms:
Percentage of girls = 1.2 / 2.2 * 100%
Dividing, we find:
Percentage of girls ≈ 0.545 * 100% ≈ 54.5%
Therefore, approximately 54.5% of the seniors are girls.