900/45 = 20
so ratio of middle school students and teachers: 900:45 = 20:1
if high school student-teacher ratio as middle school then
x/110 = 20/1
so x = 110 * 20 = 2200
answer is C) 2200
Answer:
they are already paralell
Step-by-step explanation:
ok
Answer:
9
Step-by-step explanation:
2x=28-10
2x=18
x=18÷2
x=9