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Compound Interest Problems

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Math Expert
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Joined: 02 Sep 2009
Posts: 58982
Compound Interest Problems  [#permalink]

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New post 28 Jul 2014, 14:57
15
73

Compound Interest Problems


!
This post is a part of the Special Questions Directory focusing on Quant topics traditionally neglected and not covered by conventional sources but still tested on the GMAT. Many of these are above average difficulty questions

Compound interest questions are quite often for the test. Many of them involve quite ugly numbers and tedious math, which should be an indication that they can be solved with a shortcut approach or approximation.

PS:


alex-deposited-x-dollars-into-a-new-account-126459.html
peter-invests-100-000-in-an-account-that-pays-167793.html
if-1-000-was-invested-at-an-annual-interest-rate-of-64739.html
on-the-first-of-the-year-james-invested-x-dollars-at-128825.html
10-000-is-deposited-in-a-certain-account-that-pays-r-65464.html
jolene-entered-an-18-month-investment-contract-that-127308.html
louie-takes-out-a-three-month-loan-of-1000-the-lender-101506.html
michelle-deposited-a-certain-sum-of-money-in-a-savings-138273.html
alan-has-split-his-savings-equally-into-two-accounts-the-174445.html
leona-bought-a-1-year-10-000-certificate-of-deposit-that-143742.html
donald-plans-to-invest-x-dollars-in-a-savings-account-that-82702.html
a-sum-of-3310-is-to-be-paid-back-in-3-equal-installments-151366.html
diana-invested-61-293-in-an-account-with-a-fixed-annual-168637.html
on-a-certain-day-tim-invested-1-000-at-10-percent-annual-117437.html
jim-needs-1-000-to-buy-a-new-flat-screen-tv-since-he-has-159412.html
julie-put-half-of-her-savings-in-a-savings-account-that-pays-174262.html
shawn-invested-one-half-of-his-savings-in-a-bond-that-paid-s-37333.html
john-deposited-10-000-to-open-a-new-savings-account-that-135825.html
marcus-deposited-8-000-to-open-a-new-savings-account-that-128395.html
an-amount-is-deposited-into-an-account-accruing-interest-ann-141389.html
a-bank-offers-an-interest-of-5-per-annum-compounded-annua-154203.html
if-money-is-invested-at-r-percent-interest-compounded-annua-144266.html
a-sum-of-money-doubles-itself-at-a-compound-interest-in-15-y-167196.html
if-money-is-invested-at-r-percent-interest-compounded-annual-104225.html
an-investment-of-1000-was-made-in-a-certain-account-and-ear-142993.html
the-difference-between-simple-interest-and-compound-interest-of-a-198898.html

DS:


if-a-loan-of-p-dollars-at-an-interest-rate-of-r-percent-161402.html
on-may-1-of-last-year-jasmin-invested-x-dollars-in-a-new-133937.html
at-the-beginning-of-january-2003-elizabeth-invested-money-in-an-accou-194353.html


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Joined: 02 Sep 2009
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Re: Compound Interest Problems  [#permalink]

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New post 17 Feb 2016, 02:32
1
5
pepo wrote:
Great post!!! :D

Is there someone who knows where I can read some good theory about simple and coumpound interest?
Looking on internet I found something, but it wasn't so exhaustive, in fact I have been able to solve and understand only some questions.

Thanks in advance!


Percentages, Interest and More

Theory on Percent and Interest Problems

DS Percent and Interest Problems
PS Percent and Interest Problems

Hope it helps.
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Posts: 220
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Re: Compound Interest Problems  [#permalink]

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New post 19 Sep 2014, 02:36
2
1
Bunuel wrote:

Compound Interest Problems


!
This post is a part of the Special Questions Directory focusing on Quant topics traditionally neglected and not covered by conventional sources but still tested on the GMAT. Many of these are above average difficulty questions

Compound interest questions are quite often for the test. Many of them involve quite ugly numbers and tedious math, which should be an indication that they can be solved with a shortcut approach or approximation.

PS:


alex-deposited-x-dollars-into-a-new-account-126459.html
peter-invests-100-000-in-an-account-that-pays-167793.html
if-1-000-was-invested-at-an-annual-interest-rate-of-64739.html
on-the-first-of-the-year-james-invested-x-dollars-at-128825.html
10-000-is-deposited-in-a-certain-account-that-pays-r-65464.html
jolene-entered-an-18-month-investment-contract-that-127308.html
louie-takes-out-a-three-month-loan-of-1000-the-lender-101506.html
michelle-deposited-a-certain-sum-of-money-in-a-savings-138273.html
alan-has-split-his-savings-equally-into-two-accounts-the-174445.html
leona-bought-a-1-year-10-000-certificate-of-deposit-that-143742.html
donald-plans-to-invest-x-dollars-in-a-savings-account-that-82702.html
a-sum-of-3310-is-to-be-paid-back-in-3-equal-installments-151366.html
diana-invested-61-293-in-an-account-with-a-fixed-annual-168637.html
on-a-certain-day-tim-invested-1-000-at-10-percent-annual-117437.html
jim-needs-1-000-to-buy-a-new-flat-screen-tv-since-he-has-159412.html
julie-put-half-of-her-savings-in-a-savings-account-that-pays-174262.html
shawn-invested-one-half-of-his-savings-in-a-bond-that-paid-s-37333.html
john-deposited-10-000-to-open-a-new-savings-account-that-135825.html
marcus-deposited-8-000-to-open-a-new-savings-account-that-128395.html
an-amount-is-deposited-into-an-account-accruing-interest-ann-141389.html
a-bank-offers-an-interest-of-5-per-annum-compounded-annua-154203.html
if-money-is-invested-at-r-percent-interest-compounded-annua-144266.html
a-sum-of-money-doubles-itself-at-a-compound-interest-in-15-y-167196.html
if-money-is-invested-at-r-percent-interest-compounded-annual-104225.html
an-investment-of-1000-was-made-in-a-certain-account-and-ear-142993.html

DS:


if-a-loan-of-p-dollars-at-an-interest-rate-of-r-percent-161402.html
on-may-1-of-last-year-jasmin-invested-x-dollars-in-a-new-133937.html




Terrific. I guess this should take care of the Interest Problem Issues once and for all.
:-D
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Joined: 21 Jan 2014
Posts: 93
GMAT 1: 500 Q32 V28
GPA: 4
Re: Compound Interest Problems  [#permalink]

Show Tags

New post 17 Feb 2016, 02:00
Great post!!! :D

Is there someone who knows where I can read some good theory about simple and coumpound interest?
Looking on internet I found something, but it wasn't so exhaustive, in fact I have been able to solve and understand only some questions.

Thanks in advance!
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Joined: 09 Sep 2013
Posts: 13559
Re: Compound Interest Problems  [#permalink]

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New post 23 Aug 2019, 13:39
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Re: Compound Interest Problems   [#permalink] 23 Aug 2019, 13:39
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