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# If a certain automobile gets between 20 and 24 miles per gallon of gas

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Math Expert
Joined: 02 Sep 2009
Posts: 51229
If a certain automobile gets between 20 and 24 miles per gallon of gas  [#permalink]

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09 Jul 2018, 05:18
00:00

Difficulty:

15% (low)

Question Stats:

86% (00:42) correct 14% (01:07) wrong based on 21 sessions

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If a certain automobile gets between 20 and 24 miles per gallon of gasoline, inclusive, what would be the maximum amount of gasoline, in gallons, this automobile would consume on a trip of 360 miles?

(A) 20.0
(B) 18.0
(C) 16.4
(D) 16.0
(E) 15.0

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Posts: 2323
Re: If a certain automobile gets between 20 and 24 miles per gallon of gas  [#permalink]

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09 Jul 2018, 05:24

Solution

Given:
• A certain automobile gets between 20 and 24 miles per gallon of gasoline, inclusive

To find:
• The maximum amount of gasoline, in gallons, the automobile would consume on a trip of 360 miles

Approach and Working:
In case of maximum gasoline usage, the mileage of the automobile would be minimum
• Therefore, maximum gasoline consumption = $$\frac{360}{20} = 18$$ gallons

Hence, the correct answer is option B.

Note: The minimum gasoline consumption would have been $$\frac{360}{24} = 15$$ gallons
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Re: If a certain automobile gets between 20 and 24 miles per gallon of gas  [#permalink]

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09 Jul 2018, 05:36
Bunuel wrote:
If a certain automobile gets between 20 and 24 miles per gallon of gasoline, inclusive, what would be the maximum amount of gasoline, in gallons, this automobile would consume on a trip of 360 miles?

(A) 20.0
(B) 18.0
(C) 16.4
(D) 16.0
(E) 15.0

Maximum Gasoline = Minimum Mileage = 20 miles/hour

So, Requirement of Gasoline is $$\frac{360}{20}$$ = 18 gallons, Answer must be (B)
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Re: If a certain automobile gets between 20 and 24 miles per gallon of gas &nbs [#permalink] 09 Jul 2018, 05:36
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