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10,000 is deposited in a certain account that pays r percent

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10,000 is deposited in a certain account that pays r percent [#permalink] New post 15 Oct 2008, 16:38
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$10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years in given by D(t)=10,000(1+(r/100))t What amount will the deposit grow to in 3 years?

(1) D(t) = 11,000
(2) r=10


what on earth does (1) say????? is D(t) a constant???
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Re: DS--Interest [#permalink] New post 15 Oct 2008, 18:35
I had same reaction WTH
question stem says that D(t) is the amount that will be in (t) years and statement. Question asks what is D(t) and st 1 says D(t) is 11000.

Am I again making some stupid mistake?
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Re: DS--Interest [#permalink] New post 15 Oct 2008, 20:08
fresinha12 wrote:
$10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years in given by D(t) = 10,000 (1+(r/100))^t. What amount will the deposit grow to in 3 years?

(1) D(t) = 11,000
(2) r = 10
what on earth does (1) say????? is D(t) a constant???


Do you have this question in its original form?

Seems B is the answer.

1: we do not know "t". D(t) = 11,000 could be in 5 years or 10 years or 100 years. so D(3) varies accordingly. so insuff.........
2: if r = 10, D(3) = 10,000 (1+(10/100))^3. so suff...
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Re: DS--Interest [#permalink] New post 15 Oct 2008, 20:53
It may not make logical sense, but stmt1 says that D(t) is constant irrespective of t.

Hence,answer should be D.
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Re: DS--Interest [#permalink] New post 16 Oct 2008, 06:27
scthakur wrote:
It may not make logical sense, but stmt1 says that D(t) is constant irrespective of t.

Hence,answer should be D.


why? where does the question say t = 3?
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Re: DS--Interest [#permalink] New post 16 Oct 2008, 07:11
well the OA is D..

I was debating if D(t) is a constant or not..and I think it is..
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Re: DS--Interest [#permalink] New post 16 Oct 2008, 08:22
fresinha12 wrote:
well the OA is D..

I was debating if D(t) is a constant or not..and I think it is..


fresinha12,
what is the source?
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Re: DS--Interest [#permalink] New post 16 Oct 2008, 09:13
GMAT TIGER wrote:
fresinha12 wrote:
well the OA is D..

I was debating if D(t) is a constant or not..and I think it is..


fresinha12,
what is the source?

dont know..just saw it in a collection of math questions online
Re: DS--Interest   [#permalink] 16 Oct 2008, 09:13
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