Math questions and topics from the Official Guide and Quantitative Review books. Please try to follow the posting pattern (e.g. OG - DS - #142) to allow for easier searches. Questions posted in the GMAT Math section regarding the OG have been moved here.
CC
 
 

OG - PS - #75

by CC Wed Sep 12, 2007 4:45 pm

The book's explanation uses the interest formula. How would one approach this problem w/o using the interest formula?

Leona bought a 1 year $10,000 certificate of deposit that paid interest at an annual rate of 8% compounded annually. What was the total amount of interest paid on this certificate at maturity?

$10,464
$864
$816
$800
$480
guest
 
 

by guest Thu Sep 13, 2007 11:23 am

I'm wondering if I can get an explanation to this problem?

thanks!!
StaceyKoprince
ManhattanGMAT Staff
 
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by StaceyKoprince Mon Sep 17, 2007 8:05 pm

Please double-check the text of this question. Someone else posted this recently (not sure if it was you) and I asked him / her to double-check also. As written, the problem gives an annual interest rate "compounded annually." If it's compounded on the same schedule as the rate, then it never actually compounds, so I highly doubt that this is the original wording of the problem.

Also, FYI, the fastest you'll typically get a response is 2-3 days; the forums are only staffed 1 hour per day on business days. When traffic is heavy, it can take even longer.
Stacey Koprince
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Director, Content & Curriculum
ManhattanPrep