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by ketkoag » Sat Jul 11, 2009 11:08 am
A set has 16 numbers. If a number is three times the average of the other 15 numbers, the number is what fraction of the sum of the total numbers?
1/6
1/3
1/4
1/5
3/8

[spoiler]i got A as the answer i.e. 1/6 but OA given is C i.e. 1/4,please confirm ur answer..[/spoiler]
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by shibal » Sat Jul 11, 2009 11:25 am
i also got 1/6... for example lets get 45 as a and the avg of 15 numbers as 15.... 45/270 is equal to 1/6....
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by tom4lax » Sat Jul 11, 2009 2:08 pm
I also got 1/6.

If the average is x, the sum for the first 15 numbers is 15x

Total for the 16th number is 3x

15x + 3x = 18x

3x/18x = 1/6

Are we missing something?
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by mehravikas » Sat Jul 11, 2009 10:43 pm
should be 'A'..whats the source?
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by ketkoag » Sun Jul 12, 2009 9:54 am
i got this question from the internet.
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