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2. Ben Gunn of Treasure Island bought of Stevenson Creamery, 44 Ocean Ave., H. I.,

Apr. 1 2 lb. Roquefort cheese at $1.25

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3. E. H. Skinner bought of David Eklund & Co., Baltimore, Md.,

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Paid $20 on Oct. 5; $10 on Oct. 15; $20 on Oct. 19; $25 on Oct. 25.

4. Wesley Iberg bought of the Polaris Electric Co., St. Paul, Minn.,

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5. Fred Frover purchased of the Homer Brown Supply Co., 4272 State St., Akron, Ohio,

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CHAPTER V

PERCENTAGE

Per cent means by the hundred. Hence, 5 per cent of a number means at the rate of 5 out of a hundred; 25 per cent means 25 out of a hundred, and so on.

Per cent is usually indicated by the symbol %. Thus, 8% means 8 per cent, or 8 out of a hundred, or 8 hundredths. It can be written also 18 or .08. Seven and one half per cent can be written 71% or .075. Thus, per cent can be expressed either as a decimal fraction or as a common fraction.

Rule. To express per cent as a common fraction, (1) write the number indicating the per cent for the numerator and 100 for the denominator, and (2) reduce this fraction to lowest terms.

EXAMPLE. Express 5 % both as a decimal and as a common fraction in its lowest terms.

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Express as decimals and as common fractions in their lowest terms the following per cents:

1. 10% 5. 75% 9. 200% 13. 121 % 17. 871% 2. 20% 6. 100% 10. 275% 14. 81%

18.1%

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3. 25% 7. 120% 11. 33% 4. 50 % 8. 150%

Exercise

Write the following decimals as fractions and as per cents:

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Write the following fractions as decimals and as per cents:

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The following is a tabulated list of the percentage equiva

lents of commonly occurring fractions:

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1. What is 50% of 100? of 80? of 60? of 360? of 500? of 1000?

2. What is 25% of 100? of 80? of 60? of 360? of 500? of 1000?

3. What is 10% of 100? of 80? of 60? of 360? of 500? of 1000?

4. What is 20% of 100? of 80? of 60? of 360? of 500? of 1000?

5. What is 5% of 100? of 80? of 60? of 360? of 500? of 1000?

Base, Rate, Percentage

The base is the number on which the percentage is computed.

The rate is the number of hundredths and is usually expressed as a decimal.

The percentage is the result obtained by taking a certain per cent of the base.

Rule.

To find the percentage when the base and rate are given, express the rate as a decimal and multiply the base by it.

EXAMPLE 1. Find 6% of $50.

$50 the Base, is the number on which the percentage is computed. .06 the Rate, is the number of hundredths taken.

$3.00 the Percentage, is the result of multiplying base by rate.

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1. What is 61% of 100? of 96? of 360? of 500? of 600? of 1?

2. What is 63% of 100? of 96? of 360? of 500? of 600? of 1?

3. What is 31% of 100? of 96? of 260? of 500? of 600? of 1?

4. What is 144 % of 100? of 96? of 360? of 500? of 600? of 1?

5. What is 83% of 100? of 96? of 360? of 500? of 600? of 1?

6. What is 87% of 100? of 96? of 360? of 500? of 600? of 1?

7. What is 37% of 100? of 96? of 360? of 500? of 600? of 1?

8. What is 62% of 100? of 96? of 360? of 500? of 600? of 1?

9. What is 663 % of 100? of 96? of 360? of 500? of 600? of 1?

10. What is 87% of 100? of 96? of 360? of 500? of 600? of 1?

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