Strategy Guide Supplement - Q13 pg 124

[chiba.pawan]

Hi Ron

Please refer Question # 13 in Advanced Gmat Quant Strategy guide

My attempt is attached for your ready reference. I got an answer as A, however as per the solution in the guide (solution on pg:133) the answer is C



Could you tell where I have gone wrong in my calculations / approach?

Thanks
Pawan

[RonPurewal]

Per the forum rules, please post the question in its entirety. If there are answer choices, please post those as well.

Thanks.