GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Regular gas costs $3.00 a gallon and is consumed at a rate
[#permalink]
27 May 2018, 03:46
27 May 2018, 03:46
Expert Reply
00:00
Question Stats:
95% (01:05) correct
4% (02:48) wrong based on 49 sessions
Hide Show timer Statistics
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
(A) $1
(B) $4
(C) $5
(D) $36
(E) $40
Re: Regular gas costs $3.00 a gallon and is consumed at a rate
[#permalink]
27 May 2018, 12:51
27 May 2018, 12:51
Expert Reply
Explanation
12 gallons of regular gas are needed to go 300 miles (300 divided by 25 miles per gallon), costing $36 (12 gallons × $3 per gallon).
10 gallons of premium would be needed to go 300 miles (300 divided by 30 miles per gallon), costing $40 (10 gallons × $4 per gallon).
The question asks for the difference, which is $40 – $36 = $4.
12 gallons of regular gas are needed to go 300 miles (300 divided by 25 miles per gallon), costing $36 (12 gallons × $3 per gallon).
10 gallons of premium would be needed to go 300 miles (300 divided by 30 miles per gallon), costing $40 (10 gallons × $4 per gallon).
The question asks for the difference, which is $40 – $36 = $4.
Target Test Prep Representative
Joined: 09 May 2016
Status:Head GRE Instructor
Affiliations: Target Test Prep
Posts: 183
Given Kudos: 114
Location: United States
Re: Regular gas costs $3.00 a gallon and is consumed at a rate
[#permalink]
08 Jun 2018, 10:12
08 Jun 2018, 10:12
Expert Reply
sandy 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
(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
