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Two cars, A and B, each traveled a distance of 200 miles. Did car A us

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Two cars, A and B, each traveled a distance of 200 miles. Did car A us  [#permalink]

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New post 22 Mar 2017, 02:31
00:00
A
B
C
D
E

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  5% (low)

Question Stats:

88% (00:45) correct 12% (00:59) wrong based on 92 sessions

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Two cars, A and B, each traveled a distance of 200 miles. Did car A use more gasoline than car B?

(1) Cars A and B traveled the entire distance at the rates of 48 miles per hour and 44 miles per hour, respectively.
(2) The car traveling faster burned more gasoline per mile.

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Re: Two cars, A and B, each traveled a distance of 200 miles. Did car A us  [#permalink]

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New post 22 Mar 2017, 10:56
Two cars, A and B, each traveled a distance of 200 miles. Did car A use more gasoline than car B?

To solve this question we need the miles traveled per gallon by each car

Statement (1) Cars A and B traveled the entire distance at the rates of 48 miles per hour and 44 miles per hour, respectively.

This statement just gives us the info on which car was travelling faster, hence this is insufficient.

Statement (2) The car traveling faster burned more gasoline per mile.

This statement does tell us the car which traveled faster burned more gasoline per mile. But does not give info on which car was traveling faster. Hence this is insufficient.

Combining both statements we have the information we need to solve this question. Hence Answer is C
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Re: Two cars, A and B, each traveled a distance of 200 miles. Did car A us  [#permalink]

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New post 22 Mar 2017, 13:10
1 is insufficient because we do not know if car A used more gasoline than car B. We get information to calculate the distance. That is unnecessary in this case. Insufficient
2 is insufficient because we do not know the speed for each car. Insufficient.

If you combined 1 & 2, sufficient. Because 1 provides us speed and 2 indicates that the car travelling faster burned more gasoline. Therefore, car B used more gasoline.

Answer: C
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Two cars, A and B, each traveled a distance of 200 miles. Did car A us  [#permalink]

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New post 29 Jul 2018, 01:36
Bunuel wrote:
Two cars, A and B, each traveled a distance of 200 miles. Did car A use more gasoline than car B?

(1) Cars A and B traveled the entire distance at the rates of 48 miles per hour and 44 miles per hour, respectively.
(2) The car traveling faster burned more gasoline per mile.


Dear Moderator,

Kindly have a look at this question , feel as though answer should be E.

Although the faster car burned more Gasoline per hour , it also reached faster, meaning it took lesser time . Hence we cannot be sure , that the faster car burned more gasoline , overall.

Soln:
Lets say faster car took 4 hours to make the journey and slower car took 5 hours to make the journey. ( Faster car will take less time and slower car will take more time )

lets say faster car burned 3 gallons per hour , hence it consumed 12 gallons overall.Slower car burned 2.9 gallons per hour ,hence it consumed 14.5 gallons overall.
Here Slower car consumed more than faster car.

Lets say faster car burned 3 gallons per hour , hence it consumed 12 (4*3) gallons overall.Slower car burned 2 gallons per hour ,hence it consumed 10 (5*2) gallons overall
Here Slower car consumed less than faster car.

Hence Both statement seem insufficient. Answer should be E.Please feel free to correct me , if I am making any mistake anywhere. Thank you.

EDIT:
oops ! My Bad - Second statement reads " More Gasoline per mile" Not " More Gasoline per hour "
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Two cars, A and B, each traveled a distance of 200 miles. Did car A us &nbs [#permalink] 29 Jul 2018, 01:36
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Two cars, A and B, each traveled a distance of 200 miles. Did car A us

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