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Today, all the items in a store are 30% discounted.

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Senior Manager
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Today, all the items in a store are 30% discounted. [#permalink] New post 21 Apr 2006, 02:10
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Today, all the items in a store are 30% discounted. Currently, the kitchen items are 20% discounted. Based on this 20% discounted price, how much is the discount today?

10%
12.5%
33.3%
50%
Senior Manager
Senior Manager
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Joined: 15 Mar 2005
Posts: 425
Location: Phoenix
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Re: PS Discount [#permalink] New post 21 Apr 2006, 10:09
Not very clear language, but if your question involves applying 20% discount on an article which is already 30% discounted, we're talking about applying a total of 30 + (100-30)x20/100 = 44% discount.

This of course is not even in the list of answers. Can you please explain the question again?
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Re: PS Discount [#permalink] New post 21 Apr 2006, 10:23
getzgetzu wrote:
Today, all the items in a store are 30% discounted. Currently, the kitchen items are 20% discounted. Based on this 20% discounted price, how much is the discount today?

10%
12.5%
33.3%
50%


I agree, language in this problem is not very clear, however,
my answer would be 12.5%

based on 20% discount

(0.8 - 0.7) / 0.8 = 12.5%
Senior Manager
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Joined: 15 Mar 2005
Posts: 425
Location: Phoenix
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Re: PS Discount [#permalink] New post 21 Apr 2006, 10:30
conocieur wrote:
getzgetzu wrote:
Today, all the items in a store are 30% discounted. Currently, the kitchen items are 20% discounted. Based on this 20% discounted price, how much is the discount today?

10%
12.5%
33.3%
50%


I agree, language in this problem is not very clear, however,
my answer would be 12.5%

based on 20% discount

(0.8 - 0.7) / 0.8 = 12.5%


Oh you calculated on the basis of total discount being 30%, and one discount being 20%, what was the other discount???
So after 20% discount, 0.8 (1-x) = 0.7
=> 1-x = .7/.8 = 0.875 => x = .125 = 12.5%????

I didn't get the very simplistic calculation that you did. Tell me the secret :)
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Re: PS Discount   [#permalink] 21 Apr 2006, 10:30
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