In our class 12 girls have short hair, and 4 girls have long hair. What fraction of the girls have long hair?
(girls with long hair) / (girls in class)
To find the fraction of girls who have long hair, we first need to determine the total number of girls in the class. From the information given, we know that there are 12 girls in total (since it says "In our class 12 girls...").
Next, we need to find the number of girls who have long hair, which is stated as 4.
Finally, we can calculate the fraction of girls with long hair by dividing the number of girls with long hair by the total number of girls. So, the fraction of girls with long hair is 4/12.
In simplified form, the fraction is 1/3.