Usually you compare two quantities, to find out how much percent one is of another. The second quantity is often a total, but it need not be so. Divide the first quantity by the second, and multiply the result by 100, to get the percentage.
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The answer to two and a half percent is easy. Simply find one percent,double it to get two percent and then half one percent to find the half. Put them together and you have two and a half percent.
To find 35 percent of a number, you first convert 35 percent to a decimal by dividing it by 100, which gives you 0.35. Then, you multiply this decimal by the number you want to find 35 percent of. For example, to find 35 percent of 100, you would calculate 0.35 x 100 = 35. Therefore, 35 percent of 100 is 35.
Part = Whole*Percent/100
0.5 percent of 640 = 0.16
To find 30 percent of 20 percent of 150 percent, you first need to calculate 20 percent of 150 percent. To do this, you multiply 0.20 by 1.50, which equals 0.30. Next, you find 30 percent of 0.30 by multiplying 0.30 by 0.30, which equals 0.09. Therefore, 30 percent of 20 percent of 150 percent is 0.09.