Answer:
1:8
Step-by-step explanation:
We know that every 9 computers there are 72 students, so if we divide 72 by 9 it will be 8. Therefore for 1 computer it has 8 students.
Student who gone from class within 3 sec = 12
within 1 sec, it would be 12/3 = 4
So, your answer is 4
The number is 10
3x-8=22
3x=30
x=10
Answer: 4<x<20
4 comes from subtracting the two lengths, and 20 comes from adding the two. The answer will be more than 4, however, less than 20.
