21/0.15 = 140 Therefore, 21 is 15 percent of 140.
15%.
21
21
21
% of change = [(21-15)/15] x 100%= 40% (increase)
15 / 21 = 0.714286Converting decimal to a percentage: 0.714286 * 100 = 71.43%
3.15 pounds.
40% increase.
21%
Oxygen makes up 21 percent of Earth's atmosphere.
It is: 2.1/140 times 100 = 1.5%