It is currently 22 Nov 2017, 00:38

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

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

Author Message
Manager
Joined: 05 Jul 2006
Posts: 195

Kudos [?]: 77 [0], given: 0

if a and b are positive integers, what is the value of a + [#permalink]

### Show Tags

10 Sep 2006, 12:01
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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.

Kudos [?]: 77 [0], given: 0

Senior Manager
Joined: 14 Jul 2005
Posts: 398

Kudos [?]: 31 [0], given: 0

Re: DS- a & b [#permalink]

### Show Tags

10 Sep 2006, 12:49
lan583 wrote:
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.

I think the answer is C

From 1, a/b=5/8 a and b could be any 2 integers satisfying the ratio i.e. (5,8) or (10,16) etc
INSUFF

From 2, the GCD is 1 is INSUFF as a and b could be any 2 prime numbers

Combined, a=5 and b=8 are the only values possible hence a+b = 13

SUFF

Kudos [?]: 31 [0], given: 0

Re: DS- a & b   [#permalink] 10 Sep 2006, 12:49
Display posts from previous: Sort by