in acertain ratio of boys and girls is 4:5. if the class has 54 students, how many are girls?
boys --- 4x
girls ---- 5x
4x+5x = 54
take over....
30:24
To find out how many students are girls, we need to determine the number of students in the given ratio and then calculate the number of girls based on that.
Step 1: Add the ratio numbers to find the total parts.
4 + 5 = 9
Step 2: Divide the total number of students by the total parts of the ratio to find the value of one part.
54 / 9 = 6
Step 3: Multiply the value of one part by the ratio number for girls to find the number of girls.
5 * 6 = 30
So, there are 30 girls in the class.