Fraction to Percent | MathHelp.com - By MathHelp.com
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| 00:0-1 | to write the fraction 3/20 as a percent . Remember | |
| 00:04 | that a percent is a ratio that compares a number | |
| 00:07 | to 100 . So we need to find a fraction | |
| 00:10 | that's equivalent to 3/20 that has a 100 in the | |
| 00:13 | denominator . To do this , we set up a | |
| 00:16 | proportion three is to 20 As N is 2 100 | |
| 00:25 | . Now using cross products to find the missing value | |
| 00:28 | . In the proportion we have three times 100 Equals | |
| 00:36 | 20 times , end three times 100 is 300 And | |
| 00:45 | 20 times and is 20 n . So we have | |
| 00:49 | 300 equals 20 n . To solve for N . | |
| 00:53 | We divide by 20 on both sides of the equation | |
| 00:57 | to get 15 equals and So 3/20 is equivalent to | |
| 01:03 | 15 over 100 , which can be written as 15% | |
| 00:0-1 | . |
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