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On an adventure trip, Steve drove 50 miles. He drove 30 miles at an av
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20 Oct 2023, 03:51
20 Oct 2023, 03:51
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Question Stats:
60% (02:50) correct
40% (01:59) wrong based on 15 sessions
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On an adventure trip, Steve drove 50 miles. He drove 30 miles at an average speed of 60 miles per hour and then drove the remaining distance at a different constant speed. Had he driven entirely at the speed at which he drove the remaining distance of the trip, he would have driven for 1 hour.
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
Steve’s average speed for the entire 50 miles |
56 miles per hour |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
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Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
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Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
Re: On an adventure trip, Steve drove 50 miles. He drove 30 miles at an av
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08 Dec 2023, 15:48
08 Dec 2023, 15:48
Expert Reply
Re: On an adventure trip, Steve drove 50 miles. He drove 30 miles at an av
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11 Dec 2023, 06:12
11 Dec 2023, 06:12
1
The answer is B.
Let the unknown speed = s mph
Given: 50/s = 1 --> s = 50 mph
--> Total time (t) = (30/60) + (20/50)
--> t = 0.5 + 0.4 = 0.9 hours
--> Average speed = 50/0.9 = 55.56 mph
Let the unknown speed = s mph
Given: 50/s = 1 --> s = 50 mph
--> Total time (t) = (30/60) + (20/50)
--> t = 0.5 + 0.4 = 0.9 hours
--> Average speed = 50/0.9 = 55.56 mph
