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Difficult Math Work Problem (GMAT Prep)

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by parallel_chase » Sun Aug 17, 2008 12:20 pm
a+b =6/5 hrs, 1/a +1/b = 5/6 tank/hour
b+c =3/2 hrs, 1/b +1/c = 2/3 tank/hour
a+c = 2 hrs, 1/a + 1/c = 1/2 tank/hour

2[1/a + 1/b + 1/c] = 5/6+2/3+1/2 =2

1/a + 1/b + 1/c = 2/2 =1/1

a+b+c =1

Let me know if you still have any questions.
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by ozzy10fl » Sun Aug 17, 2008 3:30 pm
Got it...Thanks so much
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