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10 May 2018, 03:55
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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:
75%
(hard)
Question Stats:
57% (02:00) correct
43%
(03:01)
wrong
based on 14
sessions
History
Date
Time
Result
Not Attempted Yet
Alex and Hales started rowing towards one another at constant speeds and met after rowing for an hour. The initial distance between Alex and Hales was 20 kilometers and Alex rowed downstream while Hales rowed upstream during this journey. On some other day, the time taken by Alex alone, rowing at the same constant speed, to cover the distance between these two points going upstream was 75 minutes more than the time taken by him to cover the same distance going downstream. What was the time taken in hours by Hales to cover 20 kilometers going upstream? Assume the speed of the stream to be 4 kilometers per hour.
A. 1.25
B. 1.6
C. 2.5
D. 5
E. 8
A. 1.25
B. 1.6
C. 2.5
D. 5
E. 8
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10 May 2018, 08:16
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Is the answer 5??
The distance covered by Alex is 12km and the distance covered by Hales is 8 km
The distance covered by Alex is 12km and the distance covered by Hales is 8 km
tarunanandani
Joined: 01 Apr 2018
Last visit: 09 Jul 2019
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GMAT 1: 650 Q49 V30
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10 May 2018, 08:54
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IMO OA is 5hrs.
Speed of Alex is 12km/hr. and that of Hales is 8km/hr.
Speed of Alex is 12km/hr. and that of Hales is 8km/hr.
