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Help needed_Distance problem

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by sanalnnair » Wed Sep 15, 2010 8:24 pm
Can anyone help me to solve this question of DS??


Did it take Pei more than 2 hours to walk a distance of 10 miles along a certain trail? ( 1 mile = 1.6 Kms)
1) Pei walked this distance at an average rate of less than 6.4 Kilometers per hour
2) On average, it took Pei more than 9 minutes per kilometer to walk this distance.

Soure GMAT Prep


I got the answer correctly as D, but i need some explanations for the answer.
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by selango » Wed Sep 15, 2010 9:24 pm
D=16 kms

t>2?

If speed is less than 8,then the time taken is greater than 2.

stmt1,

S<6.4 km/hr

Suff

stmt2,


rate>9 min/km

If we take the least vale 9.1 mins per km,time taken to travel 16 kms is 145.6 mins which is greater than 2 hrs.

Suff

Pick D
--Anand--
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