GMAT Paper Tests
At garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37
OA B
At garage sale, all of the prices of the items sold were
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Since the radio = 15th highest price, 14 prices are HIGHER:AAPL wrote:GMAT Paper Tests
At garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37
RADIO-----14 higher prices----->
Since the radio = the 20th lowest price, 19 prices are LOWER:
<-----19 lower prices-----RADIO-----14 higher prices---->
Total number of items = 19 + RADIO + 14 = 34.
The correct answer is B.
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The price of the radio was the 15th highest priceAAPL wrote:GMAT Paper Tests
At garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37
OA B
So, there were 14 items that were more expensive than the radio.
In other words, if we listed all of the prices in ascending order, we'd get something like:
........... radio, X, X, X, X, X, X, X, X, X, X, X, X, X, X
The price of the radio was the 20th lowest price
So, there were 19 items than were less expensive than the radio.
In other words, if we listed all of the prices in ascending order, we'd get something like:
X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, radio,......
So, when we combine both pieces of information, we have 19 items that were less expensive than the radio, and we have 14 items that were more expensive than the radio:
X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, radio, X, X, X, X, X, X, X, X, X, X, X, X, X, X
So, the total number of items sold = 19 + 14 + 1 (the radio itself)
= 34
= B
Cheers,
Brent
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A simple drawing does the trick!AAPL wrote:GMAT Paper Tests
At garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37
\[? = 20+14 = 34\]
This solution follows the notations and rationale taught in the GMATH method.
Regards,
Fabio.
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Since the radio's price is the 15th highest and 20th lowest, we see that 14 items have a price higher than the radio, and 19 items have a price lower than the radio. Thus, the total number of items at the sale is 14 + 19 + 1 = 34. (Note that the +1 item is the radio itself.)AAPL wrote:GMAT Paper Tests
At garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37
OA B
Answer: B
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