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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- Stne