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by raunekk » Sat Aug 09, 2008 9:29 am
12,00000+360000+600000/12 = 180000

imo:A
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by Ian Stewart » Sat Aug 09, 2008 9:35 am
If the average over 10 months was 120k, the total earned over 10 months was 10*120k. In November, they made 3*120k, and in December, 5*120k. So the total earned in the year is:

10*120k + 3*120k + 5*120k = (10+3+5)(120k) = 18*120k

The average for the year is (18)(120k)/12, and sure enough, the 12 cancels, so we get 18*10k = 180k.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com

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by [email protected] » Sat Aug 09, 2008 9:36 am
Excellent thanks Ian!!
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by sudhir3127 » Sat Aug 09, 2008 9:38 am
i go with A as well..
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by missionmba » Sun Aug 10, 2008 1:34 pm
IMO: A
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