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SET 6 Q 30

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by [email protected] » Fri Sep 14, 2007 12:33 pm
Q30:
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1) She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
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Source: — Data Sufficiency |
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by kajcha » Fri Sep 14, 2007 1:24 pm
Should be D

Suppose he bought x 0.15 stmaps and y 0.29 stamps

Stmt 1 - 0.15x + 0.29y = 4.40. At the same time x and y should be integer. true only for x=y=10. SUFF

Stmt 2 - x=y. So it can be solved for x=y=10. SUFF
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by Preetics » Fri Sep 14, 2007 8:44 pm
How is statement 2 also suff by itself?? Please explain.
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by samirpandeyit62 » Sat Sep 15, 2007 12:24 am
IMO ans should be A

coz .15x + .29y =4.40

only possible for x =y=10 SUFF

stmt 2: equal nos can be any thing i.e x=y= 1...anything

coz we dont have the total so here it can be anything.

NOT SUFF
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by camitava » Sat Sep 15, 2007 12:44 am
Guys from stmt - 1 here, we are being able to find out the answer (somehow we have to use back track to find out the answer from only stmt - 1) but is it not better for us that both the options given act together. Then we can easily find out the correct answer. So I thought C will be the best answer but here it works in different way!
Correct me If I am wrong


Regards,

Amitava
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by [email protected] » Sat Sep 15, 2007 4:34 am
The OA is A.
We cannot find the answer using second option
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by kajcha » Sat Sep 15, 2007 4:44 am
My bad... I overlooked and assumed that $4.40 is given in the question instead of stmt 1....

Would be A
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