### 1.3 Using Percent

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• Math Help

When you are finding "what percent one number is of another," be sure you understand the following.

1. A percent is the ratio of two numbers.
2. The numerator and denominator are measured in the same units.
3. The numerator is the part.
4. The denominator is the base.
5. Dividing the numerator by the denominator produces the decimal form of a percent.

Here are some examples.

1. Of 16 coins, 4 are nickels.

So, 25% of the coins are nickels.

2. Your hourly wage of \$9.50 will be increased by \$2.15.

So, you will receive a 22.6% raise.

• Consumer Suggestion

Did you know that the game SCRABBLE was invented during the Great Depression? Use a search engine to discover the origins of your favorite board or card game.

• Checkpoint Solution

Begin by counting the number of tiles and the number of vowels. There are 103 letters in this Spanish version of SCRABBLE.

Number of A's:
11
Number of E's:
11
Number of I's:
6
Number of O's:
8
Number of U's:
6
Total:
42

So, in this Spanish version of SCRABBLE, about 41% of the tiles are vowels.

Note: A different Spanish version of SCRABBLE is sold outside of North America and has 100 letter tiles, including

Number of A's:
12
Number of E's:
12
Number of I's:
6
Number of O's:
9
Number of U's:
5
Total:
44

To solve the problem using this version of SCRABBLE

So, in the Spanish version of SCRABBLE, exactly 44% of the tiles are vowels.

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``` _    _     _____    __   __   _    _    _    _
| |  | ||  |  ___||  \ \\/ // | || | || | \  / ||
| |/\| ||  | ||__     \   //  | || | || |  \/  ||
|  /\  ||  | ||__     / . \\  | \\_/ || | .  . ||
|_// \_||  |_____||  /_//\_\\  \____//  |_|\/|_||
`-`   `-`  `-----`   `-`  --`   `---`   `-`  `-`

```