21 percent is 21% or 21/100.
.21 or 21%
21
9.45
12.60
21% of 1,300= 21% * 1300= 0.21 * 1300= 273
21 x 115/100 ie 24.15
(7 percent of 21) - (4 percent of 21) = 0.63
It is: 12% of 175 = 21
The troposphere is 21% oxygen.
25000 = 250 x 100, so 21% = 250 x 21...
The percent of oxygen is 27. this increases the natural percent of 21 by 6 percent causing living organisms to have too much oxygen.