X = 9.
We can figure this out by solving each statement on its own.
Avg = median
so Avg for 4 numbers = 36
and 7 < x < 11, so x has to be 9 to make average as 9 and median as 9 as well.
GMAT Prep - Median
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Source: Beat The GMAT — Data Sufficiency |
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albertrahul
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