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On a trolley ride around an amusement park, a child traveler
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14 Oct 2013, 08:47
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71% (02:33) correct 29% (02:26) wrong based on 1068 sessions
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On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost
2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost
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14 Oct 2013, 09:01
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On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
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14 Oct 2013, 09:02
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Bunuel wrote:
On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
On a trolley ride around an amusement park, a child traveler
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20 Nov 2015, 02:14
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bulletpoint wrote:
On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost
2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost
Since both the statements are given in the form of time, it is better to convert the question in the form of time. Distance = speed*time (125/60)*t>800? Or t > 384?
Statement 1: t < 450 Possible values of t: t < 384 384 < t <450 INSUFFICIENT
Re: On a trolley ride around an amusement park, a child traveler
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14 Oct 2013, 09:03
bulletpoint wrote:
On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost
2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost
Statement A: We are not sure, Whether how much it takes for the travel- It may take 100 sec, 200 sec or even 300 sec- So Statement A is not sufficient.
Statement B: 800 meter(0.8 KM) takes less than 400. so we can say that this definitely did not take more than 400 sec- The answer to this statement is NO- Which is sufficient-
Re: On a trolley ride around an amusement park, a child traveler
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22 Mar 2017, 20:38
Gnpth wrote:
bulletpoint wrote:
On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost
2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost
Statement A: We are not sure, Whether how much it takes for the travel- It may take 100 sec, 200 sec or even 300 sec- So Statement A is not sufficient.
Statement B: 800 meter(0.8 KM) takes less than 400. so we can say that this definitely did not take more than 400 sec- The answer to this statement is NO- Which is sufficient-
Answer is B.
You'll still need to consider the upper boundary for 1)
Re: On a trolley ride around an amusement park, a child traveler
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05 Sep 2017, 17:27
Bunuel wrote:
On a trolley ride around an amusement park, a child travelled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child travelled from the first signpost to the second signpost greater than 0.8km? (1km = 1,000meters)
So, the question basically asks whether the time taken was greater than 384 seconds.
1) It took less than 450 seconds for the child to travel from the first signpost to the second signpost. Not sufficient.
2) It took more than 400 seconds for the child to travel from the first signpost to the second signpost. Sufficient.
Answer: B.
This is the best approach to this solution, i unnecessarily spent almost 3 mins solving this, while using Bunuel's approach it actually should have taken 30 seconds. Lesson i learnt, it is not about solving the problem ONLY it is also about solving it quicker! Thanks for such an elegant approach!
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Re: On a trolley ride around an amusement park, a child traveler
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23 Sep 2019, 11:57
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71% (02:33) correct 
