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When Mark fills his car with regular gasoline
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24 Oct 2019, 22:33
24 Oct 2019, 22:33
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Question Stats:
60% (01:51) correct
39% (02:02) wrong based on 46 sessions
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When Mark fills his car with regular gasoline, he gets 20 miles/gallon. When he fills his car with premium gasoline, he gets 25 miles/gallon. If the price of regular gasoline is $4.00 per gallon and the price of premium gas is $6.25 per gallon, then the cost efficiency of regular gasoline, in miles/dollar, is what percent greater than the cost efficiency of premium gasoline?
(A) 4%
(B) 10%
(C) 20%
(D) 25%
(E) 50%
(A) 4%
(B) 10%
(C) 20%
(D) 25%
(E) 50%
Re: When Mark fills his car with regular gasoline
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20 Apr 2020, 15:53
20 Apr 2020, 15:53
Expert Reply
Regular gasoline, Cost of efficiency is per mile travel cost: 4/20= 0.2 $ per mile
Premium gasoline, Cost of efficiency is per mile travel cost: 6.25/25= 0.25 $ per mile
%= {(0.25 - 0.2)/0.20} * 100= 25%
Answer is D
Premium gasoline, Cost of efficiency is per mile travel cost: 6.25/25= 0.25 $ per mile
%= {(0.25 - 0.2)/0.20} * 100= 25%
Answer is D
Re: When Mark fills his car with regular gasoline
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19 Oct 2024, 05:41
19 Oct 2024, 05:41
shouldnt it be
%= {(0.25 - 0.2)/0.25} * 100= 20%??
Am I understanding the question wrong?
%= {(0.25 - 0.2)/0.25} * 100= 20%??
Am I understanding the question wrong?
