The ratio of boys to girls in a class is 3 to 5. What percentage of the class are girls?
5/8 = 0.625 = 62.5%
7 boys
8girls
To find the percentage of girls in the class, we need to determine the fraction of the class that consists of girls and then convert it to a percentage.
Given that the ratio of boys to girls is 3 to 5, we can assume that the class can be divided into 3 + 5 = 8 equal parts.
Since we want to find the percentage of girls, we will focus on the 5 parts that represent girls.
To express the fraction of girls in the class, we'll use 5 out of the total 8 parts or 5/8.
To convert this fraction to a percentage, we multiply it by 100:
(5/8) * 100 = 62.5%
Therefore, 62.5% of the class consists of girls.