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Interest Problem

Expert replies
by oks » Wed May 13, 2009 4:59 pm
How much interest will $2,400 earn at an annual rate of 8% in one year if the interest is compounded every 4 months?

(a) $141
(b) $150
(c) $197
(d) $234
(e) $312

If I use the formula of F = P(1+R/N)^N*T, I don't get the correct answer.
The actual explanation is to use simple interest formula:

$2,400 x 8/100 x 1 = $192. Since we are calculating as a compounded rate, the interest should be a bit higher, or C as the correct answer.

Could someone please explain.
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Source: — Problem Solving |

interest problem

by travern.jack » Wed May 13, 2009 9:26 pm
the actual formula is { 2400(1 + 8/3x100)^3 - 2400 } = 197.11
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by joostinshu » Thu May 14, 2009 4:35 am
You can use simple compounding since there are only 4 compounding periods and arrive at a number is only very close to one answer choice.
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by batbond007 » Mon Dec 21, 2009 12:44 pm
Any better explanations please on this one ?
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