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If r and s are positive integers and r - s = 6, which of the following has the greatest value?
A. 2r
B. 2s
C. r + s
D. 2r - s
E. 2s - r
I am not entirely sure of the method I used and I got
D and E have answer value of 12
B has answer value of 12-r
A has answer value of 12+s
C, I am not even sure how to input the values for this one
A. 2r
B. 2s
C. r + s
D. 2r - s
E. 2s - r
I am not entirely sure of the method I used and I got
D and E have answer value of 12
B has answer value of 12-r
A has answer value of 12+s
C, I am not even sure how to input the values for this one
Solving this question helps.
Taking a timed set of similar questions in
GMAT Club Forum Quiz →
is even better.
11 Mar 2015, 23:04
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Hi zatspeed,
You can answer this question by using Number Properties and logic or by TESTing VALUES.
We're told that R and S are POSITIVE INTEGERS and that R-S = 6. We're asked which of the 5 answers has the GREATEST value.
IF....
R = 8
S = 2
Answer A: 2R = 2(8) = 16
Answer B: 2S = 2(2) = 4
Answer C: R+S = 8+2 = 10
Answer D: 2R-S = 2(8) - 2 = 14
Answer E: 2S-R = 2(2) - 8 = -4
Final Answer:
GMAT assassins aren't born, they're made,
Rich
You can answer this question by using Number Properties and logic or by TESTing VALUES.
We're told that R and S are POSITIVE INTEGERS and that R-S = 6. We're asked which of the 5 answers has the GREATEST value.
IF....
R = 8
S = 2
Answer A: 2R = 2(8) = 16
Answer B: 2S = 2(2) = 4
Answer C: R+S = 8+2 = 10
Answer D: 2R-S = 2(8) - 2 = 14
Answer E: 2S-R = 2(2) - 8 = -4
Final Answer:
GMAT assassins aren't born, they're made,
Rich
11 Mar 2015, 23:45
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Bookmarks
EMPOWERgmatRichC
That makes great sense. Thanks
I tried inputting the values for example as it says r-s=6. I input answer D as 2(r-s=6)= 12. But guess this method is wrong.
