GRE : Quantitative Comparison Problem
On a trip, Marie drove 200 miles in 5 hours using gasoline that cost her $1.49 per gallon. Column A : Marie’s average speed for the trip in miles per hour Column B : Marie’s gas mileage for the trip in miles per gallon The total number of miles driven by Marie in 5 hours is 200. The average speed is 200/5 = 40 miles/hour. So, A = 40. B can not be calculated because the total number of gallons consumed by the car for the trip is not given. So, it is not possible to compare A and B. Therefore D is the answer. This is the Quantitative Comparison Problem.Understand the basic mathematical principles behind this problem and other problems.
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