Answer:
B - 30
Step-by-step explanation:
You need to add 2 and 3 together to find the total students.
The ratio would be:
2 : 3 = 5
x : 18 = x
Since we only know there are 18 girls we can only substitute that in only. Everything else is x.
18 ÷ 3 = 6
To find the scale factor, divide 18 and 3. Which is 6.
5 × 6 = 30
Multiply 5 with the scale factor to find the number of students.
