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Re: At a special sale, all of the prices of the items were different. If [#permalink]
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Bunuel wrote:
At a special sale, all of the prices of the items were different. If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?

A. 33
B. 34
C. 35
D. 36
E. 37


Let x = the price of the radio

The price of a radio sold at the sale was the 15th highest price
So, if all of the prices were written in ASCENDING order, then there would be 14 items that are more expensive than x (the price of the radio)
In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

The price of a radio sold at the sale was the 20th lowest price
So, if all of the prices were written in ASCENDING order, then there would be 19 items that are less expensive than x (the price of the radio)
In other words, our list would look like this: ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

How many items were sold at the sale?
TOTAL number of items = 19 + 1 + 14 = 34

Answer: B
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
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Bunuel wrote:
At a special sale, all of the prices of the items were different. If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?


A. 33
B. 34
C. 35
D. 36
E. 37

Solution:

Since the radio had the 15th highest price, 14 items had a price higher than the radio. Likewise, since the radio had the 20th lowest price, 19 items had a price lower than the radio. Therefore, there were 14 + 1 + 19 = 34 items sold at the sale.

Answer: B
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
Given: At a special sale, all of the prices of the items were different.
Asked: If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?

If we arrange prices of all the items in descending order, we get
14 items - Radio - 19 items
Total items sold = 14 + 1 + 19 = 34

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Re: At a special sale, all of the prices of the items were different. If [#permalink]
Bunuel wrote:
At a special sale, all of the prices of the items were different. If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?


A. 33
B. 34
C. 35
D. 36
E. 37

|---------------19 items-------------Item---------14 items----------|

19 + 14 = 33 items...

Now, you are actually counting the middlemost item twice , once when counting highest & once while counting lowest, hence we must add 1 item!!!

Thus, correct Answer must be (B) 34
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
BrentGMATPrepNow wrote:
Bunuel wrote:
At a special sale, all of the prices of the items were different. If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?

A. 33
B. 34
C. 35
D. 36
E. 37


Let x = the price of the radio

The price of a radio sold at the sale was the 15th highest price
So, if all of the prices were written in ASCENDING order, then there would be 14 items that are more expensive than x (the price of the radio)
In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

The price of a radio sold at the sale was the 20th lowest price
So, if all of the prices were written in ASCENDING order, then there would be 19 items that are less expensive than x (the price of the radio)
In other words, our list would look like this: ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

How many items were sold at the sale?
TOTAL number of items = 19 + 1 + 14 = 34

Answer: B


Hi BrentGMATPrepNow, silly question that isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order? not sure what did I miss? Thanks Brent
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
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Kimberly77 wrote:
BrentGMATPrepNow wrote:
Bunuel wrote:
At a special sale, all of the prices of the items were different. If the price of a radio sold at the sale was both the 15th highest and the 20th lowest price among the prices of the items sold, how many items were sold at the sale?

A. 33
B. 34
C. 35
D. 36
E. 37


Let x = the price of the radio

The price of a radio sold at the sale was the 15th highest price
So, if all of the prices were written in ASCENDING order, then there would be 14 items that are more expensive than x (the price of the radio)
In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

The price of a radio sold at the sale was the 20th lowest price
So, if all of the prices were written in ASCENDING order, then there would be 19 items that are less expensive than x (the price of the radio)
In other words, our list would look like this: ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?

How many items were sold at the sale?
TOTAL number of items = 19 + 1 + 14 = 34

Answer: B


Hi BrentGMATPrepNow, silly question that isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order? not sure what did I miss? Thanks Brent


Sorry, can you please rephrase your question?
I'm not sure what you are asking.
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
Sure BrentGMATPrepNow, I mean according to below:

Isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order?

In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
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Kimberly77 wrote:
Sure BrentGMATPrepNow, I mean according to below:

Isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order?

In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?


That part is just the beginning of my solution, where I show that x is the 15th highest in ascending order?
In other words, if x is the 15th highest price, then there are 14 values that are greater than x (thus the 14 ?'s)
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
BrentGMATPrepNow wrote:
Kimberly77 wrote:
Sure BrentGMATPrepNow, I mean according to below:

Isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order?

In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?


That part is just the beginning of my solution, where I show that x is the 15th highest in ascending order?
In other words, if x is the 15th highest price, then there are 14 values that are greater than x (thus the 14 ?'s)


Thanks BrentGMATPrepNow. If x is the 15th highest price, not sure why it doesn't mean there are 14 values lowver than 15th but greater here?
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
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Kimberly77 wrote:
BrentGMATPrepNow wrote:
Kimberly77 wrote:
Sure BrentGMATPrepNow, I mean according to below:

Isn't x show as the 1st of the position and ? at the end is the 15th highest in ascending order?

In other words, our list would look like this: ........x, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?


That part is just the beginning of my solution, where I show that x is the 15th highest in ascending order?
In other words, if x is the 15th highest price, then there are 14 values that are greater than x (thus the 14 ?'s)


Thanks BrentGMATPrepNow. If x is the 15th highest price, not sure why it doesn't mean there are 14 values lowver than 15th but greater here?


Sorry, but that's just what those words mean.
For example, if someone is the 2nd tallest person in the world, then that means there's only 1 person taller.
Similarly, if someone is the 15th tallest person in the world, then that means there are 14 people who are taller.
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Re: At a special sale, all of the prices of the items were different. If [#permalink]
Ah your explanation is great and crystal clear as always...make sense now. Thanks BrentGMATPrepNow.
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