Answer:
2:24
1:12
4:48
3:36
Step-by-step explanation:
First, you want to find the unit rate for teachers (since you can't have 1/2 of a person/teacher). You do this by dividing 12 and 2 by 2, because there are 2 teachers teaching a class of 24.
24 divided by 2 = 12
2 divided by 2 = 1
Therefore 1 teachers teaches 12 students.
1:12 is the first ratio
You can find the second one by doing 12 times 4, because if each teacher gets 12 students, and there are 4 teachers, you need to add 12+12+12+12 or just 12 times 4.
4:48
For 36 you need to do the reverse. 36 divided by 12, because if there are 12 students for 1 teacher, finding how many times 12 fits into 36 will give you the number of teachers you have.
3:36
Remember when doing problems like this to also use your logic. For instance, you can't have 1 and 1/2 teachers or 15 and 1/4 students.
