In 2010 a company makes a profit which is 25% higher than in 2009. In 2011 the profit drops back to the level of 2009. What was the percentage decrease from 2010 to 2011?

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Just a maths question I'm stuck on. I think its 25%, but that is too obvious. 

Thanks!

Posted Fri 7th September, 2012 @ 20:58 by Emily

2 Answers

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I would substitute some numbers in like this...

Let the profit in 2009 be £100,

Therefore the profit in 2010 is 125% of 100 which is £125 and the profit in 2011 is £100 (sam as 2009).

You then work out the percentage decrease from 2010 to 2011 by using the formula...

percentage change = final value - initial value           

                           ---------------------------         x 100

                                   initial value

so ((100-125)/125) x 100 = -20% so a 20% decrease.

Hope that helps!

Answered Sat 8th September, 2012 @ 09:33 by Dilly
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Thank you! That really helped :)

Answered Sat 8th September, 2012 @ 12:03 by Emily