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Isaac can purchase a certain item in four different ways, as
[#permalink]
09 Nov 2010, 06:35
09 Nov 2010, 06:35
1
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A
B
C
D
E
Difficulty:
35%
(medium)
Question Stats:
70% (01:33) correct
30%
(01:43)
wrong
based on 872
sessions
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?
A. 88.10
B. 89.00
C. 89.10
D. 89.50
E. 90.00
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?
A. 88.10
B. 89.00
C. 89.10
D. 89.50
E. 90.00
Attachments
Re: isaac can purchase
[#permalink]
09 Nov 2010, 06:45
09 Nov 2010, 06:45
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Expert Reply
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?
A. 88.10
B. 89.00
C. 89.10
D. 89.50
E. 90.00
1. Internet: $80, with no sales tax, plus $10 shipping fee --> 80+10=90;
2. Store X: $90, a 10% discount, plus 10% tax on discounted price --> 90*0.9*1.1=89.1
3. Store Y: $90, no tax --> 90;
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax --> 90*1.1-10=89.
So the lowest price is $89.
Answer: B.
_________________
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?
A. 88.10
B. 89.00
C. 89.10
D. 89.50
E. 90.00
1. Internet: $80, with no sales tax, plus $10 shipping fee --> 80+10=90;
2. Store X: $90, a 10% discount, plus 10% tax on discounted price --> 90*0.9*1.1=89.1
3. Store Y: $90, no tax --> 90;
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax --> 90*1.1-10=89.
So the lowest price is $89.
Answer: B.
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Re: isaac can purchase
[#permalink]
09 Nov 2010, 08:11
09 Nov 2010, 08:11
An easy question i suppose could have taken max upto a minute to solve
Lowest price comes out to be 89
from Store Z: $90, a 10% sales tax, and $10 rebate after tax
which is 10% of 90 = 9 hence price + Sales tax = 90 +9 =99$
99$ - 10$ = 89$
Lowest price comes out to be 89
from Store Z: $90, a 10% sales tax, and $10 rebate after tax
which is 10% of 90 = 9 hence price + Sales tax = 90 +9 =99$
99$ - 10$ = 89$
Manager
Joined: 29 Sep 2010
Status:Happy to join ROSS!
Posts: 234
Concentration: General Management, Strategy
Schools: Ross '14 (M$)
Re: isaac can purchase
[#permalink]
29 Mar 2011, 09:00
29 Mar 2011, 09:00
anilnandyala wrote:
thanks bunuel i didn't study q properly
No, Anil, the issue is not about studying, but about attention... I got trapped by this question just like you did
Retired Moderator
Joined: 16 Nov 2010
Posts: 908
Location: United States (IN)
Concentration: Strategy, Technology
Re: isaac can purchase
[#permalink]
29 Mar 2011, 19:20
29 Mar 2011, 19:20
Option 2 = (90 - 9) + 0.1 * 81
= 81 + 8.1 = 89.10
Option 4 = 90 + 0.1 * 90 - 10
= 89
So the OA is correct - B
_________________
= 81 + 8.1 = 89.10
Option 4 = 90 + 0.1 * 90 - 10
= 89
So the OA is correct - B
_________________
Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)
Isaac can purchase a certain item in four different ways, as
[#permalink]
Updated on: 04 Oct 2020, 03:33
Updated on: 04 Oct 2020, 03:33
OFFICIAL GMAT EXPLANATION
If Isaac purchases the item from the Internet, he will pay $(80 + 10) = $90.
If Isaac purchases the item from Store X, he will pay
$90 – 0.10($90) + 0.10[$90 – 0.10($90)] = $90 – $9 + $8.10 = $89.10.
If Isaac purchases the item from Store Y, he will pay $90.
If Isaac purchases the item from Store Z, he will pay
$90 + 0.10($90) – $10 = $90 + $9 – $10 = $89.
Therefore, the lowest price for which he can purchase the item is $89.00.
If Isaac purchases the item from the Internet, he will pay $(80 + 10) = $90.
If Isaac purchases the item from Store X, he will pay
$90 – 0.10($90) + 0.10[$90 – 0.10($90)] = $90 – $9 + $8.10 = $89.10.
If Isaac purchases the item from Store Y, he will pay $90.
If Isaac purchases the item from Store Z, he will pay
$90 + 0.10($90) – $10 = $90 + $9 – $10 = $89.
Therefore, the lowest price for which he can purchase the item is $89.00.
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Joined: 16 Aug 2015
Posts: 10155
GMAT 1: 760 Q51 V42
GPA: 3.82
Re: Isaac can purchase a certain item in four different ways, as
[#permalink]
04 Oct 2020, 03:27
04 Oct 2020, 03:27
Expert Reply
1. Internet: $80, with no sales tax, plus $10 shipping fee : $80 + $10 = $90
2. Store X: $90, a 10% discount, plus 10% tax on discounted price: $90 * \(\frac{90}{100}\) * \(\frac{110}{100}\) = $89.1
3. Store Y: $90, no tax: $90
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax: $90 * \(\frac{110}{100}\) - 10 = 89
The lowest price is $89.0
Answer B
2. Store X: $90, a 10% discount, plus 10% tax on discounted price: $90 * \(\frac{90}{100}\) * \(\frac{110}{100}\) = $89.1
3. Store Y: $90, no tax: $90
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax: $90 * \(\frac{110}{100}\) - 10 = 89
The lowest price is $89.0
Answer B
Re: Isaac can purchase a certain item in four different ways, as
[#permalink]
30 Aug 2023, 08:21
30 Aug 2023, 08:21
Expert Reply
Let's calculate the total cost for each option and then determine the lowest price at which Isaac can purchase the item.
1. Internet:
Cost: $80 + $10 (shipping fee) = $90
2. Store X:
Discounted Price: $90 - 10% of $90 = $90 - $9 = $81
Tax on Discounted Price: 10% of $81 = $8.10
Total Cost: $81 + $8.10 = $89.10
3. Store Y:
Cost: $90 (no tax)
4. Store Z:
Sales Tax: 10% of $90 = $9
Cost after Tax: $90 + $9 = $99
Rebate: $10
Total Cost: $99 - $10 = $89
The lowest price at which Isaac can purchase the item is $89, which is by choosing Store X or Store Z.
1. Internet:
Cost: $80 + $10 (shipping fee) = $90
2. Store X:
Discounted Price: $90 - 10% of $90 = $90 - $9 = $81
Tax on Discounted Price: 10% of $81 = $8.10
Total Cost: $81 + $8.10 = $89.10
3. Store Y:
Cost: $90 (no tax)
4. Store Z:
Sales Tax: 10% of $90 = $9
Cost after Tax: $90 + $9 = $99
Rebate: $10
Total Cost: $99 - $10 = $89
The lowest price at which Isaac can purchase the item is $89, which is by choosing Store X or Store Z.
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Joined: 11 Sep 2022
Posts: 500
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GMAT 1: 590 Q47 V24 
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GPA: 3.2
WE:Project Management (Other)
Re: Isaac can purchase a certain item in four different ways, as
[#permalink]
30 Aug 2023, 11:54
30 Aug 2023, 11:54
Let us analyze the options one by one,
1. Internet: $80, with no sales tax, plus $10 shipping fee => 80+10=90
2. Store X: $90, a 10% discount, plus 10% tax on discounted price => 1.1(90*0.9) = 89.1
3. Store Y: $90, no tax =>90
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax => [90*1.1]-10 =99 - 10 =89
Answer B
1. Internet: $80, with no sales tax, plus $10 shipping fee => 80+10=90
2. Store X: $90, a 10% discount, plus 10% tax on discounted price => 1.1(90*0.9) = 89.1
3. Store Y: $90, no tax =>90
4. Store Z: $90, a 10% sales tax, and $10 rebate after tax => [90*1.1]-10 =99 - 10 =89
Answer B
gmatclubot
Re: Isaac can purchase a certain item in four different ways, as [#permalink]
30 Aug 2023, 11:54
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