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GMAT prep PS question

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by mlane25269 » Mon Apr 20, 2009 6:27 pm
Can someone explain? Thanks!
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Re: GMAT prep PS question

by Vemuri » Mon Apr 20, 2009 7:11 pm
The question is asking which of the options must be less than 1.

Note: The value of r ranges from 0.1 to 0.9 & value of s ranges from 1.1 to 1.9

I - Dividing r by s will result in a fraction that is less than 1. So, this statement is sufficient.

II - Mutliplying the value of r & s will give mixed results. Multiplying 1.1 & 0.1 will results in 0.11 which is less than 1, but multiplying 1.9 & 0.9, will results in 1.71, which is greater than 1. So, this is a not a must condition.

III - This is also not a must condition. Subtract the extremes, 1.9 - 0.1 & the value is more than 1, while subtracting 1.1 - 0.9 will result in a value less than 1.

Hence, answer should be A.
Last edited by Vemuri on Mon Apr 20, 2009 8:52 pm, edited 1 time in total.
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Re: GMAT prep PS question

by fleshins » Mon Apr 20, 2009 7:50 pm
Vemuri wrote:But, when r=1/3 & s=2/9
s can't be 2/9, 1<s<2

Answer is A.
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by Sher1 » Mon Apr 20, 2009 8:22 pm
Agree with Fleshins. Ans is A
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Re: GMAT prep PS question

by Vemuri » Mon Apr 20, 2009 8:44 pm
fleshins wrote:
Vemuri wrote:But, when r=1/3 & s=2/9
s can't be 2/9, 1<s<2

Answer is A.
Damn !!! :evil: I was in a hurry to solve it in under a min & got all my fractions wrong.

Thanks for pointing this out. I will correct my post to have the correct details. :)
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