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From Aqua-Bella island, it is possible to reach Aqua-Marine island by
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11 Jan 2022, 07:29
11 Jan 2022, 07:29
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From Aqua-Bella island, it is possible to reach Aqua-Marine island by either ferry A or ferry B. Ferry A sails 3 hours at 7 kilometers per hour, while ferry B takes a route that is three times longer. If ferry A is slower than ferry B by 2 kilometers per hour, how many hours longer is the journey of ferry B compared with the journey of ferry A ?
A. 4
B. 7
C. 8.6
D. 9.6
E. 12.6
A. 4
B. 7
C. 8.6
D. 9.6
E. 12.6
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Re: From Aqua-Bella island, it is possible to reach Aqua-Marine island by
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11 Jan 2022, 07:48
11 Jan 2022, 07:48
1
Carcass wrote:
From Aqua-Bella island, it is possible to reach Aqua-Marine island by either ferry A or ferry B. Ferry A sails 3 hours at 7 kilometers per hour, while ferry B takes a route that is three times longer. If ferry A is slower than ferry B by 2 kilometers per hour, how many hours longer is the journey of ferry B compared with the journey of ferry A ?
A. 4
B. 7
C. 8.6
D. 9.6
E. 12.6
A. 4
B. 7
C. 8.6
D. 9.6
E. 12.6
Ferry A sails 3 hours at 7 kilometers per hour...
Distance = (speed)(time)
So, ferry A's travel distance = (7)(3) = 21 kilometers
...while ferry B takes a route that is three times longer.
So, ferry B's travel distance = (3)(21) = 63 kilometers
If ferry A is slower than ferry B by 2 kilometers per hour, how many hours longer is the journey of ferry B compared with the journey of ferry A ?
We already know that ferry A's speed is 7 kilometers per hour, which means ferry B's speed is 9 kilometers per hour.
Time = distance/speed
So ferry B's travel time = 63/9 = 7 hours
So, ferry A's travel time = 3 hours, and ferry B's travel time = 7 hours, which means ferry B's travel time is 4 hours longer.
Answer: A
Re: From Aqua-Bella island, it is possible to reach Aqua-Marine island by
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07 May 2024, 14:22
07 May 2024, 14:22
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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