Answer:
12 girls
Explanation:
If the ratio of the number of girls in the class to number of boys
in the class is 3:4 then
Total ratio = 3+4 =7
Ratio of girls that are in class = 3
Number of girls in class = 3/7 * 28
Number of girls in class = 3 * 4
Number of girls in class is 12 girls