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If r and s are positive integers and r-s=6, which of the following has
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Updated on: 12 Mar 2015, 06:16
Updated on: 12 Mar 2015, 06:16
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Question Stats:
91% (01:08) correct
9%
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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
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Joined: 19 Dec 2014
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Re: If r and s are positive integers and r-s=6, which of the following has
[#permalink]
11 Mar 2015, 23:04
11 Mar 2015, 23:04
1
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Expert Reply
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
Re: If r and s are positive integers and r-s=6, which of the following has
[#permalink]
11 Mar 2015, 23:45
11 Mar 2015, 23:45
EMPOWERgmatRichC
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
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.
