Wednesday, January 19, 2011

Percentage

Find 7 % of 300. Sound Difficult?

Percents: First of all you need to understand the word "Percent." The firstpart is PER, as in 10 tricks per listverse page. PER = FOR EACH. The second part of the word is CENT, as in 100. Like Century =100 years. 100 CENTST in 1 dollar etc. Ok so PERCENT = For Each 100.


So, it follows that 7 PERCENT of 100, is 7. (7 for each hundred, of only 1 hundred). 8 % of 100 = 8. 35.73% of 100 = 35.73 But how is that useful?? Back to the 7% of 300 question. 7% of the first hundred is 7. 7% of 2nd hundred is also 7, and yep, 7% of the 3rd hundred is also 7.

So 7+7+7 = 21.

If 8 % of 100 is 8, it follows that 8% of 50 is half of 8 , or 4.

Break down every number thatasked into questions of 100, if the number is less then 100, then move the decimal point accordingly.

EXAMPLES: 8%200 = ? 8 + 8 = 16.

8%250 = ? 8 + 8 + 4 =20.

8%25 = 2.0 (Moving the decimal back). 15%300 = 15+15+15=45.

15%350 = 15+15+15+7.5 = 52.5

Also it's useful to know that you can always flip percents,like 3% of 100 is the same as 100% of 3.
35% of 8 is the same as 8% of 35.

No comments:

Post a Comment