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study
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

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Question Stats:

50% (07:00) correct 50% (02:34) wrong based on 4 sessions

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study
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Answer E
from question we get the info that if rate of interest on investment A is 2R then on B is 3R.
we need to find amount in investment A
1. Lets consider P1 and P2 be amount put for investment A and B respectively so
P1*2R*1 /100= 50---eqn1 and P2*3R*1/100 =150----eqn2
from this we do not get the value of P1.hence option A is insuff
2. given P2 = 2P1
so interest on these for 1year will be
P1*2R*1/100 and 2P1*3R*1/100
so B is also insuff

considering both we get P1*2R*1 /100= 50---eqn1 and substituting P2 =2P1 in eqn2 we get 2P1*3R*1/100 = 150----eqn3 which is nothing but a multiple of eqn1 hence insuff
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proportions 01 Nov 2009, 04:12
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Can someone post an explanation for this question and confirm that the OA is A?
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study
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Please do not post incorrect OAs.

OA is not A.

Any more takes for this question?
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sriharimurthy
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Let x be the initial investment in A and y be the initial investment in B.
Let r be the rate of interest for A and s be the rate of interest for B.
Let n be the number of years.

Question Stem : s = (3/2)*r ; x = ?
Money in A = x + r*x*n
Money in B = y + S*y*n

St. (1) : n = 1 ; r*x = 50 ; s*y = 150
Since s = (3/2)*r ;
s*y = 150 ;
(3/2)*r*y = 150 ;
r*y = 100 ; Also, r*x = 50
Combining these two, we get : y = 2x
This does not give us the value of x.
Thus, Insufficient.

St. (2) : y = 2x
This is the same as the previous statement.
Thus, Insufficient.

St. (1) and (2) together :
Since both statements are the same, taken together they will not give us anything extra.
Thus, Insufficient.

Answer : E
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agree with the above
+1 for E



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