Fifth Air Force was created in 1942.
One fifth plus one fifth is two fifths (2/5).
Oxygen makes up roughly 21% of our atmosphere. Nitrogen is the dominant gas in our atmosphere (roughly 78%). The remaining 1% is comprised of carbon dioxide and other trace gases.
A fifth can be expressed as 1/5.
1/5 (one fifth)
What is a fifth of a mile??
1 quarter is 25% larger than 1 fifth.
It is: 1/5 of 15 = 3
1/5 of 1/5 = 1/5 x 1/5 = 1/25
1 and 3 fifth
1 fifth of 250 is the same as 250/5=50
1/5 > 1/10, so 1 fifth is more.