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Quite hard percentage question? - Computers, Math, Science, and ...

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Quite hard percentage question?
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NateRiver
Pileated woodpecker
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PostPosted: Wed Feb 06, 2013 1:09 pm?? ?Post subject: Quite hard percentage question? Reply with quote

A shop advertised ?Everything half price in our sale?, but also now advertises that there is ?An additional 15% off sale prices?. Overall, this is equivalent to what reduction on the original prices?
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ruveyn
Phoenix
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Joined: Sep 22, 2008
Age: 76
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PostPosted: Wed Feb 06, 2013 1:28 pm?? ?Post subject: Re: Quite hard percentage question? Reply with quote

NateRiver wrote:
A shop advertised ?Everything half price in our sale?, but also now advertises that there is ?An additional 15% off sale prices?. Overall, this is equivalent to what reduction on the original prices?

Fifteen percent off the half price is equal to seven and a half percent off the original price

ruveyn

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psychegots
Deinonychus
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Joined: Oct 04, 2011
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PostPosted: Wed Feb 06, 2013 1:30 pm?? ?Post subject: Re: Quite hard percentage question? Reply with quote

NateRiver wrote:
A shop advertised ?Everything half price in our sale?, but also now advertises that there is ?An additional 15% off sale prices?. Overall, this is equivalent to what reduction on the original prices?

Start with 100, left with 50 after 50 % off. 15% off 50 is 7,5 so left with 42,5. 42,5 is 42,5 % of the original 100 therefor the shop has a 57,5% sale.
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