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08 Jan 2020, 02:50
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
44% (02:30) correct
56%
(03:05)
wrong
based on 165
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Not Attempted Yet
Cities A and B are in different time zones. A is located 3000 km east of B. The table below describes the schedule of an airline operating non-stop flights between A and B. All the times indicated are local and on the same day.
Assume that planes cruise at the same speed in both directions. However, the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the plane’s cruising speed in km per hour?
(A) 500
(B) 550
(C) 600
(D) 700
(E) Cannot be determined
Are You Up For the Challenge: 700 Level Questions
Assume that planes cruise at the same speed in both directions. However, the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the plane’s cruising speed in km per hour?
(A) 500
(B) 550
(C) 600
(D) 700
(E) Cannot be determined
Are You Up For the Challenge: 700 Level Questions
BhishmaNaidu99
09 Jan 2020, 04:44
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given the data ,
let speed of plane is S , t is difference in the time zone.
Time taken while going from B to A = 7hr - t
Time taken while going from A to B = 4hr + t
total time taken during travelling = 7 + 4 = 11
i.e \(\frac{3000}{s-50} + \frac{3000}{s+50} = 11\) , by plugging in the s = 550kmph exactly.
let speed of plane is S , t is difference in the time zone.
Time taken while going from B to A = 7hr - t
Time taken while going from A to B = 4hr + t
total time taken during travelling = 7 + 4 = 11
i.e \(\frac{3000}{s-50} + \frac{3000}{s+50} = 11\) , by plugging in the s = 550kmph exactly.
General Discussion
08 Jan 2020, 02:50
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Bunuel
Cities A and B are in different time zones. A is located 3000 km east of B. The table below describes the schedule of an airline operating non-stop flights between A and B. All the times indicated are local and on the same day.
Assume that planes cruise at the same speed in both directions. However, the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the plane’s cruising speed in km per hour?
(A) 500
(B) 550
(C) 600
(D) 700
(E) Cannot be determined
Are You Up For the Challenge: 700 Level Questions
Assume that planes cruise at the same speed in both directions. However, the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the plane’s cruising speed in km per hour?
(A) 500
(B) 550
(C) 600
(D) 700
(E) Cannot be determined
Are You Up For the Challenge: 700 Level Questions
TWIN QUESTION: https://gmatclub.com/forum/cities-a-and ... 13968.html
