How do you find a percent of a number you don't know
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To calculate 10 percent of a number, simply divide it by 10 or move the decimal point one place to the left. For example, 10 percent of 230 is 230 divided by 10, or 23. 5 percent is one half of 10 percent. To calculate 5 percent of a number, simply divide 10 percent of the number by 2.
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Step-by-step explanation:
25%of 40 = 25/100 * 40 = 1/4 *40=10
ie, 10 % of x = 10/100 * x = x/10
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