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A car travel 140 miles in 4 hours, while
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16 Apr 2021, 07:08
16 Apr 2021, 07:08
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Expert Reply
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Question Stats:
72% (01:21) correct
27% (02:15) wrong based on 18 sessions
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A car travels 140 miles in 4 hours, while the return trip takes 3 1/2 hours. What is the average speed in miles per hour for the entire trip?
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
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A car travel 140 miles in 4 hours, while
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18 Apr 2021, 07:28
18 Apr 2021, 07:28
1
Carcass wrote:
A car travels 140 miles in 4 hours, while the return trip takes 3 1/2 hours. What is the average speed in miles per hour for the entire trip?
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
Average speed \(= \frac{(140+140)}{(4 + 3.5)} = 37.33m/h\)
Hence, option B
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Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: A car travel 140 miles in 4 hours, while
[#permalink]
12 Nov 2021, 10:30
12 Nov 2021, 10:30
Carcass wrote:
A car travels 140 miles in 4 hours, while the return trip takes 3 1/2 hours. What is the average speed in miles per hour for the entire trip?
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 35
B. 371/3
C. 371/2
D. 40
E. 75
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Average speed = (total travel distance)/(total travel time)
\(= \frac{140 miles + 140 miles }{4 hours + 3.5 hours}\)
\(= \frac{280}{7.5}\)
\(= \frac{560}{15}\) I multiplied numerator and denominator by 2 to get an easier fraction to work with
\(= 37\frac{5}{15}\)
\(= 37\frac{1}{3}\) miles per hour
Answer: B
