Since is in an unknown you can replace it by y to make the problem more familiar. So 25 of 200 is 50. Cross multiply to get y 100 200 25.
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Convert the problem to an equation using the percentage formula. Y 100 5000. Percentages of amounts can be calculated by writing the percentage as a fraction or decimal and then multiplying it by the amount in question. Read on to learn more about how to figure percentages.