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14 Apr 2021, 11:15
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C
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Difficulty:
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Question Stats:
89% (01:05) correct
11%
(01:21)
wrong
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Jemma takes 2 hours to swim the 4 miles from buoy A to buoy B. Tired from her swim, she then continues to buoy C at half her previous speed. If buoy C is 6 miles away from buoy B, how many more hours will pass before Jemma reaches Buoy C?
A. 4
B. 5
C. 6
D. 7
E. 8
A. 4
B. 5
C. 6
D. 7
E. 8
14 Apr 2021, 23:40
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A-------->B------->C
From A --->B
Distance = 4 miles
Time = 2 hours
Speed= 4/2 = 2miles per hour
From B----->C
Speed = Half of original speed i.e 1 mile per hour
Distance = 6 Miles
Thus time will be 6/1 = 6 hours
Answer option C
From A --->B
Distance = 4 miles
Time = 2 hours
Speed= 4/2 = 2miles per hour
From B----->C
Speed = Half of original speed i.e 1 mile per hour
Distance = 6 Miles
Thus time will be 6/1 = 6 hours
Answer option C
21 Apr 2021, 07:08
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Bunuel
Jemma takes 2 hours to swim the 4 miles from buoy A to buoy B. Tired from her swim, she then continues to buoy C at half her previous speed. If buoy C is 6 miles away from buoy B, how many more hours will pass before Jemma reaches Buoy C?
A. 4
B. 5
C. 6
D. 7
E. 8
Solution:A. 4
B. 5
C. 6
D. 7
E. 8
Jemma’s speed from buoy A to buoy B is 4/2 = 2 mph. Since her speed is halved when she swims to buoy C, her speed is 1 mph. Lastly, since buoy C is 6 miles away, it takes her 6/1 = 6 hours to reach buoy C.
Answer: C
