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16 May 2024, 01:30
Kudos
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
58% (01:04) correct
42%
(00:44)
wrong
based on 206
sessions
History
Date
Time
Result
Not Attempted Yet
While covering a distance from A to B, did Robert exceed a speed of 50 mph?
(1) Robert drove from A to B in 330 minutes.
(2) The distance between A and B is 242 miles.
(1) Robert drove from A to B in 330 minutes.
(2) The distance between A and B is 242 miles.
16 May 2024, 04:29
Kudos
Bookmarks
(1) Robert drove from A to B in 330 minutes.
This only tells us how long it took him to get to his destination. Without knowing the distance of the trip it is impossible to solve for his average speed.
INSUFFICIENT
(2) The distance between A and B is 242 miles.
This only tells us the distance of the journey. Without knowing how long the trip took, one cannot find the average speed of the trip.
INSUFFICIENT
(1+2)
Putting the statements together we get:
Time: \(330\) minutes = \(\frac{330}{60} = 5.5\) hours.
Distance: \(242\) miles
Therefore his average speed is: (formula for speed is Distance/Time) \(\frac{242}{5.5}= 44\).
This is under \(50\)mph. However, we do not know how Robert drove the entirety of the trip. He may have mainted \(44\)mph from beginning to end, in which case he never went over \(50\)mph. He may have also driven below \(50\)mph at certain points in his journey and above \(50\)mph in others. One cannot deduce this from the average speed alone.
INSUFFICIENT
ANSWER E
This only tells us how long it took him to get to his destination. Without knowing the distance of the trip it is impossible to solve for his average speed.
INSUFFICIENT
(2) The distance between A and B is 242 miles.
This only tells us the distance of the journey. Without knowing how long the trip took, one cannot find the average speed of the trip.
INSUFFICIENT
(1+2)
Putting the statements together we get:
Time: \(330\) minutes = \(\frac{330}{60} = 5.5\) hours.
Distance: \(242\) miles
Therefore his average speed is: (formula for speed is Distance/Time) \(\frac{242}{5.5}= 44\).
This is under \(50\)mph. However, we do not know how Robert drove the entirety of the trip. He may have mainted \(44\)mph from beginning to end, in which case he never went over \(50\)mph. He may have also driven below \(50\)mph at certain points in his journey and above \(50\)mph in others. One cannot deduce this from the average speed alone.
INSUFFICIENT
ANSWER E
24 Sep 2025, 16:57
Kudos
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