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# Is x% of x% of y equal to x% less than y ? (1) x(x + 100) =

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GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16634

Kudos [?]: 273 [0], given: 0

Re: Is x% of x% of y equal to x% less than y ? (1) x(x + 100) = [#permalink]

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17 Jan 2017, 07:57
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Kudos [?]: 273 [0], given: 0

Manager
Joined: 04 May 2014
Posts: 127

Kudos [?]: 9 [0], given: 69

Location: India
WE: Sales (Mutual Funds and Brokerage)
Re: Is x% of x% of y equal to x% less than y ? (1) x(x + 100) = [#permalink]

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04 Aug 2017, 02:55
x% of x% of y=x% less than y

(x/100)∗(x/100)Y=Y(1−x/100)

Unknown values- x and y

Statement 1- Gives us the value of x and with this we can find the value of y- sufficient
Statement 2- Cannot find Y since solving the quadratic equation gives 2 values-Not sufficient

Kudos [?]: 9 [0], given: 69

Intern
Joined: 26 Jan 2017
Posts: 32

Kudos [?]: 17 [1], given: 7

Re: Is x% of x% of y equal to x% less than y ? (1) x(x + 100) = [#permalink]

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04 Aug 2017, 07:54
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KUDOS
I took the answer as C, because only when y is not equal to 0 is the first statement valid. As we do not yet know whether y is not equal to 0, we will need the second equation. I think we cannot take the first equation as there is no mention of y and it breaks when y=0.

Kudos [?]: 17 [1], given: 7

Re: Is x% of x% of y equal to x% less than y ? (1) x(x + 100) =   [#permalink] 04 Aug 2017, 07:54

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