If n > 0, which is greater, 20 percent of n or 10 percent

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18 Jan 2005, 17:06

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If n > 0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5 ?
(1) n < 0.1
(2) n > 0.01

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18 Jan 2005, 17:16

My answer is A....because if:

0.20 > 0.10n + 0.05

then after subtraction and cross multiplication you get:

n > 1/2 but if 0.20 < 0.10n + 0.05 then n <1/2 or n = 1/2

we do not know what n could be but if it follows one those options then the choice is good. Choice 1 states that n<0.10 that also means that it is less than 1/2 which makes it the right answer choice

The second choice states that n > 0.01 but that could mean any one of those three options above so it is not sufficient.
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Last edited by greenandwise on 18 Jan 2005, 17:21, edited 1 time in total.

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18 Jan 2005, 17:20

can u plz explain your answer.
Thanks
s

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18 Jan 2005, 17:25

Sorry I edited my answer and I posted it. I hope my explanation makes sense.
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[#permalink] 18 Jan 2005, 17:25

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If n > 0, which is greater, 20 percent of n or 10 percent

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If n > 0, which is greater, 20 percent of n or 10 percent

If n > 0, which is greater, 20 percent of n or 10 percent

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