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If a and b are positive integers, what is the value of a + b

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SVP
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If a and b are positive integers, what is the value of a + b [#permalink] New post 12 Jul 2004, 21:16
00:00
A
B
C
D
E

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0% (00:00) correct 100% (00:47) wrong based on 1 sessions
17. If a and b are positive integers, what is the value of a + b ?

(1) a/b = 5/8
(2) The greatest common divisor of a and b is 1.
Director
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Re: DS-GCD Question [#permalink] New post 12 Jul 2004, 22:12
Bhai wrote:
17. If a and b are positive integers, what is the value of a + b ?

(1) a/b = 5/8
(2) The greatest common divisor of a and b is 1.


C

from 1> a can be 5,10,15 ... b can be 8, 16, 24 ...

(5,8) GCD - 1
(10,16) GCD - 2
(15,24) GCD - 3
.
.
.

Hence a=5 and b=8
CIO
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 [#permalink] New post 13 Jul 2004, 05:30
agree on C, same explanation. With ratios, we can't know the real numbers.
  [#permalink] 13 Jul 2004, 05:30
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If a and b are positive integers, what is the value of a + b

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