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29 Nov 2012, 10:18
Kudos
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C
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Difficulty:
35%
(medium)
Question Stats:
66% (01:29) correct
34%
(01:17)
wrong
based on 85
sessions
History
Date
Time
Result
Not Attempted Yet
What is the product of positive integers r and s ?
(1) 14r + s = 86
(2) s < 14
(1) 14r + s = 86
(2) s < 14
29 Nov 2012, 10:58
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What is the product of positive integers r and s ?
Notice that we are told that r and s are positive integers.
(1) 14r + s = 86. Many combinations are possible:
r=6 and s=2;
r=5 and s=16;
r=4 and s=30;
...
r=1 and s=72.
Not sufficient. (Notice that r cannot be more that 6, since in this case s must be a negative number, thus s cannot be less than 2).
(2) s < 14. Clearly insufficient.
(1)+(2) Since from (2) s<14, then s=2 and r=6. Sufficient.
Answer: C.
Notice that we are told that r and s are positive integers.
(1) 14r + s = 86. Many combinations are possible:
r=6 and s=2;
r=5 and s=16;
r=4 and s=30;
...
r=1 and s=72.
Not sufficient. (Notice that r cannot be more that 6, since in this case s must be a negative number, thus s cannot be less than 2).
(2) s < 14. Clearly insufficient.
(1)+(2) Since from (2) s<14, then s=2 and r=6. Sufficient.
Answer: C.
29 Mar 2017, 05:56
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