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Barbata invests $2400 in the National Bank at 5%. How much additional [#permalink] ### Show Tags 04 Mar 2011, 10:10 1 This post was BOOKMARKED 00:00 Difficulty: (N/A) Question Stats: 82% (01:32) correct 18% (00:56) wrong based on 11 sessions ### HideShow timer Statistics Barbata invests$2400 in the National Bank at 5%. How much additional money must she invest at 8% so that the total annual income will be equal to 6% of her entire investment?

A/ 1200
B/ 3000
C/ 1000
D/ 3600
E/ 2400
[Reveal] Spoiler: OA
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04 Mar 2011, 19:07
in short the question is asking wht additional amnt shud be added so tht the individual interest rates match up 6% of the total.

(x+2400)*6=2400*5+8x.
on solving, x=1200.
option A
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21 Jan 2017, 00:01
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Re: Barbata invests $2400 in the National Bank at 5%. How much additional [#permalink] 21 Jan 2017, 00:01 Similar topics Replies Last post Similar Topics: How much money would have to be invested in an account, which yields 3 3 17 Jan 2017, 09:17 1 How much money must be invested at 10% annual interest, compounded sem 1 17 Jan 2017, 09:04 Chu-Lihas$100 in her piggy bank. How much will she have in her bank.. 1 05 Jul 2016, 17:37
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