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The twelve numbers shown represent the ages, in years, of th [#permalink]
 24 Jan 2017, 02:48
Question Stats:
87% (00:43) correct
12% (00:44) wrong based on 24 sessions
10, 10, 10, 10, 8, 8, 8, 8, 12, 12, 11, y The twelve numbers shown represent the ages, in years, of the twelve houses on a certain city block. What is the median age, in years, of the twelve houses on the block?
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Re: The twelve numbers shown represent the ages, in years, of th [#permalink]
28 Jan 2017, 04:22
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ExplanationArrange the 11 numbers given in order, from least to greatest: 8, 8, 8, 8, 10, 10, 10, 10, 11, 12, 12We still have to add y, but what is the median of this list?
| Value of y | List | Value of Median |
| 1,2,3,4,5,6,7,8 | y, 8, 8, 8, 8, 10, 10, 10, 10, 11, 12, 12 | 10 |
| 9 | 8, 8, 8, 8, y, 10, 10, 10, 10, 11, 12, 12 | 10 |
| 10 | 8, 8, 8, 8, y, 10, 10, 10, 10, 11, 12, 12 | 10 |
| 12, 13, ... | 8, 8, 8, 8, 10, 10, 10, 10, 11, 12, 12, y | 10 |
Hence irrespective of the value of y we have Median is 10.
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Re: The twelve numbers shown represent the ages, in years, of th
[#permalink]
28 Jan 2017, 04:22
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