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# Larry saves x dollars per month. Will Larry s total savings

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Manager
Joined: 17 Nov 2009
Posts: 218
Larry saves x dollars per month. Will Larry s total savings  [#permalink]

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06 Oct 2010, 07:10
1
5
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Difficulty:

35% (medium)

Question Stats:

68% (01:34) correct 32% (01:32) wrong based on 115 sessions

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Larry saves x dollars per month. Will Larry’s total savings one year from now exceed his present savings by at least $500 ? (Assume that there is no interest.) (1) In 6 months Larry's total savings will be$900.
(2) In 3 months Larry's total savings will exceed his present savings by $150. Please explain why statement 1 is not sufficient Math Expert Joined: 02 Sep 2009 Posts: 56256 Re: Savings DS [#permalink] ### Show Tags 06 Oct 2010, 07:36 2 agnok wrote: Larry saves x dollars per month. Will Larry’s total savings one year from now exceed his present savings by at least$500 ? (Assume that there is no interest.)

(1) In 6 months Larry's total savings will be $900. (2) In 3 months Larry's total savings will exceed his present savings by$150.

Please explain why statement 1 is not sufficient

Let's say Larry's present savings is $$y$$.
Question: is $$12x+y>y+500$$? --> is $$12x>500$$?

(1) $$y+6x=900$$, not sufficient to say whether $$12x>500$$ (or whether $$6x>250$$).
(2) $$y+3x=y+150$$ --> $$x=50$$ --> $$12x=600>500$$. Sufficient.

Answer: B.
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Re: Larry saves x dollars per month. Will Larry s total savings  [#permalink]

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17 Aug 2017, 09:02
1
Given : Larry saves x $per month From 1) Larry saves 150$ per month, hence in 12 months he saves 1800$. But we don't have info about his present savings. Not Sufficient. 2) In 3 months Larry's savings exceed his saving by 150$. Now since it is given Larry saves an constant amount every month, it is safe to assume in 12 months Larry's savings will exceed his previous savings by 600\$.
Sufficient.
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Re: Larry saves x dollars per month. Will Larry s total savings  [#permalink]

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04 Jan 2019, 00:59
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Re: Larry saves x dollars per month. Will Larry s total savings   [#permalink] 04 Jan 2019, 00:59
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# Larry saves x dollars per month. Will Larry s total savings

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