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# 1) Internet: $80, with no sales tax, plus$10 shipping fee

Author Message
Manager
Joined: 03 Sep 2006
Posts: 233
Followers: 1

Kudos [?]: 19 [0], given: 0

1) Internet: $80, with no sales tax, plus$10 shipping fee [#permalink]

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27 Jan 2008, 22:19
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

1) Internet: $80, with no sales tax, plus$10 shipping fee
2) Store X: $90, a 10% discount, plus 10% tax on discounted price 3) Store Y:$90, no tax
4) Store Z: $90, a 10% sales tax, and$10 rebate after tax

Isaac can purchase a certain item in four different ways, as shown in the table. What is the lowest price for which he can purchase this item?
- 88.10
- 89.00
- 89.10
- 89.50
- 90.00

P.S> I still don't know how to get the right answer according to PowerPrep ...
SVP
Joined: 05 Aug 2007
Posts: 1502
Schools: NYU Stern '11
Followers: 15

Kudos [?]: 211 [0], given: 22

Re: Lowest price of the purchase (Mistake in PowerPrep?) [#permalink]

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27 Jan 2008, 22:21
PowerPrep doesn't agree that 89.00 is the answer?
Manager
Joined: 03 Sep 2006
Posts: 233
Followers: 1

Kudos [?]: 19 [0], given: 0

Re: Lowest price of the purchase (Mistake in PowerPrep?) [#permalink]

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27 Jan 2008, 22:25
solaris1 wrote:
PowerPrep doesn't agree that 89.00 is the answer?

It does agree, but could you please explain me how did you get 89.00, please?
SVP
Joined: 05 Aug 2007
Posts: 1502
Schools: NYU Stern '11
Followers: 15

Kudos [?]: 211 [0], given: 22

Re: Lowest price of the purchase (Mistake in PowerPrep?) [#permalink]

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27 Jan 2008, 22:29
Sure - does this help?

1. Total Price = $80 +$10 = $90 2. Total Price =$90 - $9 discount =$81 + $8.10 tax =$89.10
3. $90 4. Total Price =$90 + $9 tax =$99 - $10 rebate =$89

$89.00 is the lowest of the four. Whatever wrote: 1) Internet:$80, with no sales tax, plus $10 shipping fee 2) Store X:$90, a 10% discount, plus 10% tax on discounted price