What equation is used to calculate percents?

Part/Whole = %/100.

Example: 25 % of 200 is____ In this problem, of = 200, is = ?, and % = 25We get:is/200 = 25/100Since is in an unknown, you can replace it by y to make the problem more familiary/200 = 25/100Cross multiply to get y × 100 = 200 × 25y × 100 = 5000Divide 5000 by 100 to get ySince 5000/100 = 50, y = 50So, 25 % of 200 is 50

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