Q: How much is 21 percent?

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21

25000 = 250 x 100, so 21% = 250 x 21...

(7 percent of 21) - (4 percent of 21) = 0.63

(24/100) x 21 = 5.04

Typically, the air you breathe is comprised of 18 to 21 percent Oxygen.

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21

21% of 1,300= 21% * 1300= 0.21 * 1300= 273

21 x 115/100 ie 24.15

25000 = 250 x 100, so 21% = 250 x 21...

It is: 12% of 175 = 21

the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.

(7 percent of 21) - (4 percent of 21) = 0.63

The percent of oxygen is 27. this increases the natural percent of 21 by 6 percent causing living organisms to have too much oxygen.

86*0.21=18.06 or (21/100)*86 = 18.06