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AAPL: Moderator; Posts: 2599; Joined: Sun Oct 29, 2017 2:08 pm; Followed by:2 members

An automobile's gasoline millage varies, depending...

by AAPL » Wed Feb 07, 2018 7:16 am

An automobile's gasoline millage varies, depending on the speed of the automobile, between 18.0 and 22.4 miles per gallon, inclusive. What is the maximum distance, in miles, that the automobile could be driven on 15 gallons of gasoline?

(A) 336
(B) 320
(C) 303
(D) 284
(E) 270

The OA is A.

Experts, I need to determine the distance assuming that the automobile covers 22.4 miles per gallon, right? Then,

The maximum distance will be, 22.4*15 = 336 miles. Option A. Thanks!

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Source: Beat The GMAT — Problem Solving | Wed Feb 07, 2018 7:16 am

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ErikaPrepScholar: Legendary Member; Posts: 503; Joined: Thu Jul 20, 2017 9:03 am; Thanked: 86 times; Followed by:15 members; GMAT Score:770

by ErikaPrepScholar » Wed Feb 07, 2018 7:45 am

Correct! The car will be able to drive the greatest distance if it gets the greatest number of miles per gallon - in other words, if it has the greatest gas mileage. So the car will be able to drive the greatest distance if it drives consistently at 22.4 miles/gallon.
$$\frac{22.4\ miles}{1\ gallon}\cdot15\ gallons\ =336\ miles$$

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EconomistGMATTutor: GMAT Instructor; Posts: 555; Joined: Wed Oct 04, 2017 4:18 pm; Thanked: 180 times; Followed by:12 members

by EconomistGMATTutor » Wed Feb 07, 2018 11:52 am

AAPL wrote:An automobile's gasoline millage varies, depending on the speed of the automobile, between 18.0 and 22.4 miles per gallon, inclusive. What is the maximum distance, in miles, that the automobile could be driven on 15 gallons of gasoline?

(A) 336
(B) 320
(C) 303
(D) 284
(E) 270

The OA is A.

Experts, I need to determine the distance assuming that the automobile covers 22.4 miles per gallon, right? Then,

The maximum distance will be, 22.4*15 = 336 miles. Option A. Thanks!

Hi AAPL,
You followed the correct approach.

GMAT Prep From The Economist
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.

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GMAT/MBA Expert

Scott@TargetTestPrep: GMAT Instructor; Posts: 8086; Joined: Sat Apr 25, 2015 10:56 am; Location: Los Angeles, CA; Thanked: 43 times; Followed by:29 members

by Scott@TargetTestPrep » Mon Jul 01, 2019 4:29 pm

AAPL wrote:An automobile's gasoline millage varies, depending on the speed of the automobile, between 18.0 and 22.4 miles per gallon, inclusive. What is the maximum distance, in miles, that the automobile could be driven on 15 gallons of gasoline?

(A) 336
(B) 320
(C) 303
(D) 284
(E) 270

The maximum distance that the automobile could be driven on 15 gallons of gasoline is 15 x 22.4 = 336 miles.

Answer: A

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Founder and CEO
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