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05 Jun 2018, 21:59
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Difficulty:

25% (medium)

Question Stats:

97% (00:31) correct 3% (01:22) wrong based on 33 sessions

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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: 612 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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Re: Regular gas costs $3.00 a gallon and is consumed at a rate of 25 miles [#permalink] Show Tags 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 B is the answer. Target Test Prep Representative Status: Founder & CEO Affiliations: Target Test Prep Joined: 14 Oct 2015 Posts: 3528 Location: United States (CA) 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, 11:21
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.

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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, 11:29 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)
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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, 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
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