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From 2008 to 2009,the sales of a book de...

From 2008 to 2009,the sales of a book decreased by 80%.If the sales in 2010 was the same as in 2008,by what per cent did it increase from 2009 to 2010?

A

`80%`

B

`100%`

C

`120%`

D

`400%`

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The correct Answer is:
D
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