NEW HERE? LEARN MORE
closeclose
Last visit was: 24 Apr 2024, 17:50 It is currently 24 Apr 2024, 17:50
Decision Tracker
My Rewards
New posts
New comers' posts

Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

450,000 is invested for a year. One part earned interest at

User avatar
damit
Manager
Manager
Joined: 11 Jul 2004
Posts: 79
Own Kudos [?]: 254 [0]
Given Kudos: 0
Send PM
450,000 is invested for a year. One part earned interest at [#permalink] New post   02 Sep 2004, 12:58
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Hide Show timer Statistics
450,000 is invested for a year. One part earned interest at a% another part at b%. Total interest for the year on 450,000 was 50,000. What is a?

1. a = (2/3)b
2. Ratio of the amount of inerest earned at a to amount earned at b is 3:2



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
Alex_NL
Manager
Manager
Joined: 02 Apr 2004
Posts: 106
Own Kudos [?]: 35 [0]
Given Kudos: 0
Location: Utrecht
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   02 Sep 2004, 13:24
I think D is the answer.

st.1
5/3b * 4500 = 50000
7500b = 50000
b = 6,66%
a = 4,44% (a = 2/3b)

st.2
a = 20000
b = 30000

4500 * a = 20000
a = 4,44%

Correct me if I am wrong.

Regards,

Alex
User avatar
damit
Manager
Manager
Joined: 11 Jul 2004
Posts: 79
Own Kudos [?]: 254 [0]
Given Kudos: 0
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   02 Sep 2004, 14:12
oa is c. you reasong for statement 2 is not correct.
avatar
hardworker_indian
Senior Manager
Senior Manager
Joined: 20 Jul 2004
Posts: 318
Own Kudos [?]: 363 [0]
Given Kudos: 0
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   02 Sep 2004, 23:21
Alex, you are assuming that two 450Ks was invested in two places. Actually it is one amount solit into two invetments.

My soln:
Let first inv be x. To be simple I will use 450 and 50.

First Interest: ax/100
Second Interest: b(450-x)/100

ax/100 + b(450-x)/100 = 50
x(a-b) + 450b = 5000 ----(1)

I. a = (2/3)b
Sub this in (1) we get,
-ax + 1350a = 10000 ----(2)
Insuff

II. (ax)/(450b-bx) = 3/2
X = 1350b/2a+3b ----(3)
Insuff

Together,
We can substitute a = (2/3)b in (3) and get X in terms of a.
Substiute that back in (2) and we will get the value of a.
User avatar
Alex_NL
Manager
Manager
Joined: 02 Apr 2004
Posts: 106
Own Kudos [?]: 35 [0]
Given Kudos: 0
Location: Utrecht
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   03 Sep 2004, 00:03
Thanks guys,

You are right! I assumed that both amount were 450000.
Not stupid of me, I just need more practise with questions like these.
Kaplan does not offer that much of these questions.

Regards,

Alex
User avatar
Alex_NL
Manager
Manager
Joined: 02 Apr 2004
Posts: 106
Own Kudos [?]: 35 [0]
Given Kudos: 0
Location: Utrecht
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   03 Sep 2004, 01:15
Rahul,

Propably the same mistake as what I did.
If you read hardworker_indian´s explanation it will be more clear.

Regards,

Alex
User avatar
rahul
Manager
Manager
Joined: 18 Jun 2004
Posts: 55
Own Kudos [?]: 373 [0]
Given Kudos: 0
Location: san jose , CA
Send PM
Re: 450,000 is invested for a year. One part earned interest at [#permalink] New post   03 Sep 2004, 01:16
Yes alex i made the same mistake as you made .

One thing for sure when i rush i make mistakes . Thanks hardworker .



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
GMAT Club Bot
gmatclubot
Re: 450,000 is invested for a year. One part earned interest at [#permalink]
03 Sep 2004, 01:16
Moderators:
Bunuel
Math Expert
92900 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts
GMATBusters
GMAT Tutor
1905 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions