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Source: — Data Sufficiency |
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by seal4913 » Sat Mar 24, 2012 10:32 am
Statement 1: travel at a rate less than 6.4 km per hour. So use the max 6.4 an hour over 2 hours it's 12.8 km. However 10 miles is 10 x 1.6 = 16 km. So any vaule 6.4 and under means she didn't walked it within 2 hours. Suffient.

Statement 2: so more than 9 mins per km. So 9min/1km = x mins/16km; x = 144 mins. Which is greater than 2 hours. Again any vaule 9 mins or greater means it takes longer than 2 hours. Suffient. Therfore the answer is D
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by heymayank08 » Sat Mar 24, 2012 6:57 pm
thats the silliest,craziest,funniest and bloddiest mistake one would ever make on the day of exam :P

i forgot to convert the miles to KM

ny way thanx...seal
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