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AbdurRakib
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06 Jun 2016, 11:35
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
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Question Stats:
49% (01:26) correct
51%
(01:54)
wrong
based on 35
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The distance from Adelaide to Stansbury by road is how many miles longer than the distance from Adelaide to Stansbury by sea?
(1) If a car and a boat left Adelaide at the same time and both traveled at an average speed of 30 miles per hour, the boat would arrive at Stansbury 3 hours before the car.
(2) If a car traveled at an average speed of 60 miles per hour and a boat traveled at an average speed of 15 miles per hour, each would complete the trip from Adelaide to Stansbury in 2 hours.
(1) If a car and a boat left Adelaide at the same time and both traveled at an average speed of 30 miles per hour, the boat would arrive at Stansbury 3 hours before the car.
(2) If a car traveled at an average speed of 60 miles per hour and a boat traveled at an average speed of 15 miles per hour, each would complete the trip from Adelaide to Stansbury in 2 hours.
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06 Jun 2016, 15:58
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AbdurRakib
We need to find Dr-Ds= ?
(1) If a car and a boat left Adelaide at the same time and both traveled at an average speed of 30 miles per hour, the boat would arrive at Stansbury 3 hours before the car. It took car 3 more hours to arrive at the destination. So with speed 30 m/h, it covered a distance of 30 *3= 90 miles.
Sufficient.
(2) Dr= 60*2= 120 miles
Ds= 15*2= 30 miles
Dr-Ds= 90 miles
Sufficient.
D is the answer
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
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