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# Driving (gmatprep)

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Senior Manager
Joined: 11 Dec 2008
Posts: 467
Location: United States
GMAT 1: 760 Q49 V44
GPA: 3.9

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06 Aug 2009, 11:29
00:00

Difficulty:

(N/A)

Question Stats:

50% (00:00) correct 50% (00:00) wrong based on 7 sessions

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Senior Manager
Joined: 17 Jul 2009
Posts: 277
Concentration: Nonprofit, Strategy
GPA: 3.42
WE: Engineering (Computer Hardware)

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06 Aug 2009, 13:04
likely you are going to need both statements so lets see

first of all, statement 1 alone doesn't give us any actual values, so we dont know what each or together drove.

statement 2 alone only gave us what marsha drove.

with two together,
we are left with an equation with two unknown variables.
so with two combined we have Al and Pablo drove a combined 1050miles, Al drove 1 more hour, while Pablo drove 5mph faster. so if Al drove at 60mph, then Pablo drove 65mph, then we have an equation of 60*(t+1) + 65t = 1050 125t = 990, t = 7.92 al drove 535.2, pablo drove 514.8

if al drove 30, pablo drove 35, then 30*(t+1) + 35t = 1050 t = 15.69 then al drove 500.7, pablo drove 549.15

overall, it just means that you can't get an definite answer of who drove more between the three.(or rather between Al and Pablo)

forgot to post answer, i'll go with E
Senior Manager
Joined: 20 Mar 2008
Posts: 445

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06 Aug 2009, 21:50
1
KUDOS
Agree with sprtng, E for me.

Need some specific numbers for at least one of the two!
Intern
Joined: 11 Jul 2009
Posts: 35

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07 Aug 2009, 06:51
I'm going to go with E too...
Re: Driving (gmatprep)   [#permalink] 07 Aug 2009, 06:51
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