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# Karl invests $40000 into two different accounts with annual  post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Senior Manager Joined: 01 May 2004 Posts: 336 Location: USA Followers: 1 Kudos [?]: 73 [0], given: 0 Karl invests$40000 into two different accounts with annual [#permalink]

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02 Nov 2004, 16:27
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Karl invests $40000 into two different accounts with annual interest rates x and y. After a year he got$4080 interest. Find rate x.
A. x=y*3/4
B. ratio of interst earned on x account to interest earned on y account is 3:2
Senior Manager
Joined: 21 Jun 2004
Posts: 339
Followers: 1

Kudos [?]: 6 [0], given: 0

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02 Nov 2004, 21:38
Let me try.
My vote is for D.
Each statement is sufficient.

What do others think?
_________________

510 on my first GMAT. 610 on second GMAT.!
The struggle continues.

Senior Manager
Joined: 01 May 2004
Posts: 336
Location: USA
Followers: 1

Kudos [?]: 73 [0], given: 0

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03 Nov 2004, 10:13
No. Each is not sufficent for sure. Try to write the equations.
Joined: 31 Dec 1969
Location: India
Concentration: Marketing, General Management
GMAT 1: 710 Q49 V0
GMAT 2: 700 Q V
GMAT 3: 740 Q40 V50
GMAT 4: 700 Q48 V38
GMAT 5: 710 Q45 V41
GMAT 6: 680 Q47 V36
GMAT 7: Q42 V44
GMAT 8: Q42 V44
GMAT 9: 740 Q49 V42
GMAT 10: 740 Q V
GMAT 11: 500 Q47 V33
GPA: 3.3
WE: Sales (Investment Banking)
Followers: 0

Kudos [?]: 151 [0], given: 97671

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03 Nov 2004, 11:22
A*x/100 + (40000-A)y/100 = 4080

1. x=y*3/4

Since we have 3 variables (A, x and y) and two equations, Insuff.

2. (A*x/100)/[(40000-A)*y/100] = 3/2

Again two equations and 3 variables. Insuff.

combining we have 3 equations and 3 variables. Suff. so,C.
[#permalink] 03 Nov 2004, 11:22
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# Karl invests \$40000 into two different accounts with annual

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