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set 26 Q 15

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set 26 Q 15

by radhika1306 » Tue Sep 11, 2007 11:10 am
If the average (arithmetic mean) of 5 different numbers is 12, what is the median of the 5
numbers?
(1) The median of the 5 numbers is equal to 1/3 of the sum of the 4 numbers other than the
median.
(2) The sum of the 4 numbers other than the median is equal to 45.
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by kajcha » Tue Sep 11, 2007 11:44 am
Ans D

Q says avg of 5 no = 12 => total of 5 nos = 60

Stmt 1 - suppose nos are a, b, x, y, z.
x = (a+b+y+z)/3 ------ (1)

Now, Q says (a+b+c+x+y+z) = 60 --------- (2)

Solve 1 and 2 to get x = 15 SUFF

Stmt 2 - Sum of 4 nos = 45. So 5th no = 60-15 = 15 SUFF
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by radhika1306 » Thu Sep 13, 2007 9:45 am
thank you
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