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Helen paid $252 for a conference ticket. If she had purchas

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Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 02 Jun 2018, 04:02
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Question Stats:

68% (01:32) correct 31% (02:45) wrong based on 35 sessions
Conference Ticket Advance Discounts


5-29 days in advance15%
30-59 days in advance30%
60-89 days in advance40%

Helen paid $252 for a conference ticket. If she had purchased the ticket one day later, she would have paid $306. How many days in advance did she purchase the ticket?

(A) 5
(B) 30
(C) 59
(D) 60
(E) 89
[Reveal] Spoiler: OA

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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 02 Jun 2018, 05:48
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Helen could have purchase the ticket in one of the three time frame allowing for discounts.

Let us check if she had purchased the ticket on 5th day prior to the conference.
she gets 15% discount from 5th to 29th day hence,
0.85x = 252; x is the original price of the conference and 252 is the amount paid by helen.
x = \(\frac{252}{0.85}\)
or, x = 296..(a non-integer value)
original price cannot have a non-integer value.

Therefore she must have bought the tickets either on 30th day or 60th day
Let us see if she had bought the ticket on 30th day.
for 30-59 days she gets 30% discount hence she pays 0.7x
or, 0.7x = 252
or, x = \(\frac{252}{0.7}\) = 360 which is a tentative original price
\(0.85*360 = 306\). If she had been late by 1 day she would have to pay 85% of the original instead of 70%.
Hence this confirms that she had bought the ticket on 30th day availing of 30% discount.
option B
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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 14 Jul 2018, 04:58
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Explanation

Helen bought a ticket for $252; if she had bought it one day later, she would have paid $54 more. There are three possibilities that represent the dividing lines between the given discount levels:

Possibility 1: She bought the ticket 60 days in advance for a 40% discount (if she’d bought it one day later, or 59 days in advance, she would have received a 30% discount instead).

Possibility 2: She bought the ticket 30 days in advance for a 30% discount (if she’d bought it one day later, or 29 days in advance, she would have received a 15% discount instead).

Possibility 3: She bought the ticket 5 days in advance for a 15% discount (if she’d bought it one day later, or 4 days in advance, she would not have received any kind of discount).

This question is harder than it looks, do not calculate a percent change between $252 and $306. The discounts are percents of the full-price ticket, which is an unknown value. Call it x.

Note that the only three possible answers are 5, 30, and 60 (answers (A), (B), and (D), respectively); 59 days ahead and 89 days ahead do not represent days for which the next day (58 and 88 days ahead, respectively) results in a change in the discount.

Possibility 1 (60 days in advance): $252 would represent a 40% discount from the original price, so the original price would be $252 = 0.6x, and x would be $420.
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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 15 Jan 2019, 08:26
On https://gmatclub.com/forum/posting.php? ... &p=1866854

I found the following which may be helpful for some

GMATPrepNow wrote:
hazelnut wrote:
Conference Ticket Advance Discounts
5-29 days in advance -> 15%
30-59 days in advance -> 30%
60-89 days in advance -> 40%


Helen bought a ticket for $252. If she had bought it 1 day later, she would have paid $306. How many days in advance did she buy her ticket?

(A) 5
(B) 30
(C) 59
(D) 60
(E) 89


Let's say the regular ticket price is $100 and see what kinds of prices we pay.
5-29 days in advance: we pay $85
30-59 days in advance: we pay $70
60-89 days in advance: we pay $60

Now let's examine the following ratios:

(Price paid 30-59 days in advance)/(Price paid 5-29 days in advance) = 70/85 = 14/17
(Price paid 60-89 days in advance)/(Price paid 30-59 days in advance) = 60/70 = 6/7

Now compare the given information.
(price paid)/(price WOULD HAVE paid a day later) = 252/306 = 126/153 = 42/51 = 14/17

The ratio of 14/17 matches the first scenario.
So, it must be the case that Helen paid the $252 amount 30 days in advance.
A day later would have been 29 days in advance, in which case she would have paid $306

Answer:
[Reveal] Spoiler:
B


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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 05 Aug 2020, 14:04
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Expert's post
sandy wrote:
Conference Ticket Advance Discounts


5-29 days in advance15%
30-59 days in advance30%
60-89 days in advance40%

Helen paid $252 for a conference ticket. If she had purchased the ticket one day later, she would have paid $306. How many days in advance did she purchase the ticket?

(A) 5
(B) 30
(C) 59
(D) 60
(E) 89


Let's say the regular ticket price is $100 and see what kinds of prices we pay.
5-29 days in advance: we pay $85
30-59 days in advance: we pay $70
60-89 days in advance: we pay $60

Now let's examine the following ratios:

(Price paid 30-59 days in advance)/(Price paid 5-29 days in advance) = 70/85 = 14/17
(Price paid 60-89 days in advance)/(Price paid 30-59 days in advance) = 60/70 = 6/7

Now compare the given information.
(price paid)/(price WOULD HAVE paid a day later) = 252/306 = 126/153 = 42/51 = 14/17

The ratio of 14/17 matches the first scenario.
So, it must be the case that Helen paid the $252 amount 30 days in advance.
A day later would have been 29 days in advance, in which case she would have paid $306

Answer: B
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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 17 Aug 2020, 14:23
Wondering why you didn't compare purchasing 5 days in advance with 4 days?

85/100 = 17/20 so out of the running ... but don't you have to check it?

GreenlightTestPrep wrote:
sandy wrote:
Conference Ticket Advance Discounts


5-29 days in advance15%
30-59 days in advance30%
60-89 days in advance40%

Helen paid $252 for a conference ticket. If she had purchased the ticket one day later, she would have paid $306. How many days in advance did she purchase the ticket?

(A) 5
(B) 30
(C) 59
(D) 60
(E) 89


Let's say the regular ticket price is $100 and see what kinds of prices we pay.
5-29 days in advance: we pay $85
30-59 days in advance: we pay $70
60-89 days in advance: we pay $60

Now let's examine the following ratios:

(Price paid 30-59 days in advance)/(Price paid 5-29 days in advance) = 70/85 = 14/17
(Price paid 60-89 days in advance)/(Price paid 30-59 days in advance) = 60/70 = 6/7

Now compare the given information.
(price paid)/(price WOULD HAVE paid a day later) = 252/306 = 126/153 = 42/51 = 14/17

The ratio of 14/17 matches the first scenario.
So, it must be the case that Helen paid the $252 amount 30 days in advance.
A day later would have been 29 days in advance, in which case she would have paid $306

Answer: B
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Re: Helen paid $252 for a conference ticket. If she had purchas [#permalink] New post 18 Aug 2020, 11:46
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Expert's post
linder wrote:
Wondering why you didn't compare purchasing 5 days in advance with 4 days?

85/100 = 17/20 so out of the running ... but don't you have to check it?


You're absolutely right. I should have determine that ratio as well.
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Re: Helen paid $252 for a conference ticket. If she had purchas   [#permalink] 18 Aug 2020, 11:46
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