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Quite hard percentage question?

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NateRiver
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06 Feb 2013, 1:09 pm

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?



ruveyn
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06 Feb 2013, 1:28 pm

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

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psychegots
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06 Feb 2013, 1:30 pm

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.