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13 Jul 2016, 02:02
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A Barman's train rails across an open track at 250 kilometers per hour. A regular passenger train travels at 68% of the Barman's train speed. If the two trains start moving from the same station at the same time, how much time longer will it take the passenger train than the Barman's to travel 850 kilometers?
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
13 Jul 2016, 02:31
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Bunuel
A Barman's train rails across an open track at 250 kilometers per hour. A regular passenger train travels at 68% of the Barman's train speed. If the two trains start moving from the same station at the same time, how much time longer will it take the passenger train than the Barman's to travel 850 kilometers?
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
We have to find the difference. Barman train will require 850/250 = 3.4 hours - 204 mins
Since the speed of regular train is 68%, it will require 100/68 (since 68 % - 68/100) times barman's time.
Now we need to find the difference, so (100-68)/68 = 32/68 * 204 = 96 mins
Nightfury14
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13 Jul 2016, 03:45
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Bunuel
A Barman's train rails across an open track at 250 kilometers per hour. A regular passenger train travels at 68% of the Barman's train speed. If the two trains start moving from the same station at the same time, how much time longer will it take the passenger train than the Barman's to travel 850 kilometers?
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
A. 1 hour and 24 minutes.
B. 1 hour and 36 minutes.
C. 2 hours and 24 minutes.
D. 2 hours and 36 minutes.
E. 5 hours.
Barman's Train would cover the distance in = 850/250 = 3.4Hrs or 3 Hrs & (\(\frac{4}{10}\)*60) = 3Hrs & 24 Mins
Passenger train travel @ 68% speed of Barman's train i.e 68% of 750Km/Hr = 170 Km/Hr
Passenger Train would cover the distance in = 850/170 =5Hrs
Hence the difference in time would be = 5Hrs - 3Hrs & 24Mins = 1 Hr & 36 Mins
Bunuel Please give kudos for correct answers.
