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Regular gas costs $3.00 a gallon and is consumed at a rate
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27 May 2018, 03:46
27 May 2018, 03:46
Expert Reply
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Question Stats:
95% (01:02) correct
4% (02:48) wrong based on 46 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
(A) $1
(B) $4
(C) $5
(D) $36
(E) $40
Re: Regular gas costs $3.00 a gallon and is consumed at a rate
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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.
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Re: Regular gas costs $3.00 a gallon and is consumed at a rate
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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
