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Source: — Data Sufficiency |

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by Rahul@gurome » Mon Aug 30, 2010 10:04 pm
pradeepkaushal9518 wrote:if a/3=b/4 is a less than b?
1.b>=4
2.b<=5
If 4a = 3b, is a < b?

(1) If b = 4, a = 3; here a < b
We know that b will be a positive value greater than 5. So, a < b is true.
So, (1) is SUFFICIENT.

(2) If b = 5, a = 3.75; here a < b
If b = -4, a = -3; here a > b
No unique answer.
So, (2) is NOT SUFFICIENT.

The correct answer is [spoiler](A)[/spoiler].
Last edited by Rahul@gurome on Mon Aug 30, 2010 10:14 pm, edited 2 times in total.
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by ymach3 » Mon Aug 30, 2010 10:08 pm
if a/3=b/4 is a less than b?
1.b>=4
2.b<=5


a/3=b/4 --> a=3(b)/4

Qn : is a<b ----> i.e Is 3b/4<b or 3b<4b ?

From (i) b is Positive and greater than 4... Sufficient to answer the above Qn... SUFF

From (ii) b is both Positive and Negative.... It is True and False for few cases... i.e TRUE for a=1 and False for a=-1... INSUFF.

Hence A
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by ymach3 » Mon Aug 30, 2010 10:12 pm
Hi Rahul,

could you please check where did i commit a mistake?
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by Rahul@gurome » Mon Aug 30, 2010 10:13 pm
ymach3 wrote:Hi Rahul,

could you please check where did i commit a mistake?
You are right, I have edited my post. Thanks for pointing it out :-)
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