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camulodny
Apr 14, 2006, 01:10 PM
Hi please help me out

What is the formula for calculating percentage increases? For example in 2005 we sold 1500 apples in 2006 we sold 8700 apples. How much was the increase in percents?

Thanks

CaptainForest
Apr 14, 2006, 02:07 PM
2006 number / 2005 number x 100 = change in percentage

8700/1500 x 100 = 580%

TzAngels
Dec 5, 2007, 10:00 PM
Cumulodny,

The way I teach the people I tutor for the GED is...

is | %
of | 100

cross multiply whatever diagonal you have and divide by the remaining numner. This formula works for any percentage problem.

In your problem it works like this...

8700 | X

1500 | 100

8700 times 100 = 870000
Divided by 1500 = 580%

Same answer but with a way that works for ALL percentage problems


Good Luck

Tz

ebaines
Dec 6, 2007, 07:10 AM
Sorry CaptainF and TzA, but you have it wrong -your answers are off by 100%. The percent increase between two quantities is given by the difference between the two quantities divided by the original quantity, times 100 to get percent. So for this example:

(8700-1500)/1500 x 100 = 480%.