Answer:
11:13
Step-by-step explanation:
132:156
Split in half
66:78
Again
33:39
By 3
11:13
Answer:4
Step-by-step explanation:
Answer: 80% of the air is made up of other gases.
Step-by-step explanation:
1/5 = 2/10. There are 8/10 left over which is 80%. Hope this helps!