theperfectgentleman wrote:
A truck travelling at 70 MPH uses 30% more gasoline to travel a certain distance than at 50 MPH. If the truck can travel 19.5 miles on a litre of gasoline at 50 MPH, how far the truck can travel at 70 MPH?
A) 100
B)150
C)175
D)200
E)125
"A truck travelling at 70 MPH uses 30% more gasoline to travel a certain distance than at 50 MPH."So if the truck uses 1 litre to travel 19.5 miles at 50 mph, it will take 1.3 litres of gasoline to travel 19.5 miles at 70 mph.
So in 1 litre, it will travel only 19.5 * (1/1.3) = 15 miles
The question is missing the amount of fuel consumed. I assume it asks the distance traveled using 10 litres of gasoline. Then the answer would be 150 miles.
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Karishma
Veritas Prep GMAT Instructor
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