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05 Jun 2018, 21:59
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Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs$4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip?

(A) $1 (B)$4
(C) $5 (D)$36
(E) $40 _________________ examPAL Representative Joined: 07 Dec 2017 Posts: 451 Re: Regular gas costs$3.00 a gallon and is consumed at a rate of 25 miles [#permalink]

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05 Jun 2018, 22:24
Bunuel wrote:
Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs$4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip?

(A) $1 (B)$4
(C) $5 (D)$36
(E) $40 As the calculation we're asked to do is straightforward, we'll just do it. This is a Precise approach. cost with regular gas: 300 miles / 25 miles per gallon = 12 gallons. Multiplying by$3 a gallon gives $36 cost with premium gas: 300 miles / 30 miles per gallon = 10 gallons. Multiplying by$4 a gallon gives $40 So the difference is 40 - 36 =$4.

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05 Jun 2018, 22:38
Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs$4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip?

(A) $1 (B)$4
(C) $5 (D)$36
(E) $40 Cost incurred in the trip using Regular Gasoline= (300/25)*3=$36
Cost incurred in the trip using Premium Gasoline= (300/30)*4= $40 Therefore, Premium will cost 40-36=$4 extra

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Re: Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles [#permalink] ### Show Tags 08 Jun 2018, 11:21 Bunuel wrote: Regular gas costs$3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs $4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip? (A)$1
(B) $4 (C)$5
(D) $36 (E)$40

For a 300-mile trip, we need 300/25 = 12 gallons of regular gas, which costs 12 x 3 = $36. For a trip of the same distance, we need 300/30 = 10 gallons of premium gas, which costs 10 x 4 =$40. Thus the premium gas costs 40 - 36 = $4 more than the regular gas for a 300-mile trip. Answer: B _________________ Scott Woodbury-Stewart Founder and CEO GMAT Quant Self-Study Course 500+ lessons 3000+ practice problems 800+ HD solutions Board of Directors Status: QA & VA Forum Moderator Joined: 11 Jun 2011 Posts: 3511 Location: India GPA: 3.5 WE: Business Development (Commercial Banking) Re: Regular gas costs$3.00 a gallon and is consumed at a rate of 25 miles [#permalink]

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08 Jun 2018, 11:29
Bunuel wrote:
Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs$4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip?

(A) $1 (B)$4
(C) $5 (D)$36
(E) $40 $$\frac{300}{30}*4 - \frac{300}{25}*3$$ = $$40 - 36$$ = 4, Answer must be (B) _________________ Thanks and Regards Abhishek.... PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only ) Senior Manager Joined: 31 May 2017 Posts: 282 Re: Regular gas costs$3.00 a gallon and is consumed at a rate of 25 miles [#permalink]

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08 Jun 2018, 20:19
Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles per gallon. Premium costs$4.00 a gallon and is consumed at a rate of 30 miles per gallon. How much more will it cost to use premium rather than regular for a 300-mile trip?

Trip Distance: 300 Miles

Regular gas = 25 Miles/gallon , 12 gallons of gas used for whole trip (300/25) , cost = 12*3 = 36$Premium gas = 30 Miles/gallon , 10 gallons of gas used for whole trip (300/30) , cost = 10*4 = 40$

Difference = 40$-36$ = 4$Ans: B _________________ Please give kudos if it helps Resources | | | | | Re: Regular gas costs$3.00 a gallon and is consumed at a rate of 25 miles   [#permalink] 08 Jun 2018, 20:19
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# Regular gas costs \$3.00 a gallon and is consumed at a rate of 25 miles

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