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# Time and Distance

Discuss Time and Distance within the Quant forums, part of the CAT, XAT, MAT, CET, JMET and other Indian MBA Entrance Exams category; Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many ...

 Time and Distance
Tarun Bhardwaj

Student of MBA at DU
Delhi, Delhi

Institute: DU
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Location: Delhi, Delhi
Time and Distance - July 17th, 2013

Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

A. 9
B. 10
C. 12
D. 20

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 (2 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Time and Distance - July 18th, 2013 A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it? A. 8 hours B. 10 hours C. 12 hours D. 24 hours To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
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 (3 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Time and Distance - July 19th, 2013 Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour? A. 9 B. 10 C. 12 D. 20 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
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 (4 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Time and Distance - July 21st, 2013 If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is: A. 50 km B. 56 km C. 70 km D. 80 km To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
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 (5 (permalink)) Rohit Patil   Status: Offline Posts: 5 Join Date: Sep 2013 Re: Time and Distance - October 2nd, 2013 last answer is 50kmph Friends: (0)
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 (6 (permalink)) Jiten Mazee   Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Bhopal, Madhya Pradesh Management Paradise Guru  Institute: HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Status: Offline Posts: 2,649 Join Date: Oct 2015 Location: Bhopal, Madhya Pradesh Re: Time and Distance - January 11th, 2016 A train traveling at 72 kmph crosses a platform in 30 seconds and a man standing on the platform in 18 seconds. What is the length of the platform in meters? Friends: (0)
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 (7 (permalink)) Jiten Mazee   Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Bhopal, Madhya Pradesh Management Paradise Guru  Institute: HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Status: Offline Posts: 2,649 Join Date: Oct 2015 Location: Bhopal, Madhya Pradesh Re: Time and Distance - January 11th, 2016 A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph in 40 seconds. What is the length of the train in meters? Friends: (0)
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 (8 (permalink)) Jiten Mazee   Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Bhopal, Madhya Pradesh Management Paradise Guru  Institute: HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Status: Offline Posts: 2,649 Join Date: Oct 2015 Location: Bhopal, Madhya Pradesh Re: Time and Distance - January 11th, 2016 Jim travels the first 3 hours of his journey at 60 mph speed and the remaining 5 hours at 24 mph speed. What is the average speed of Jim's travel in mph? Friends: (0)
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 (9 (permalink)) Jiten Mazee   Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Bhopal, Madhya Pradesh Management Paradise Guru  Institute: HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE Status: Offline Posts: 2,649 Join Date: Oct 2015 Location: Bhopal, Madhya Pradesh Re: Time and Distance - January 11th, 2016 A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 km upstream and 90 km downstream in 12 hours. Find the rate of current. Friends: (0)
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Jiten Mazee

Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE

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Re: Time and Distance - January 11th, 2016

Quote:
 Originally Posted by jitenmazee A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 km upstream and 90 km downstream in 12 hours. Find the rate of current.

Let x and y be the upstream and downstream speed respectively.

Hence, 50/x + 72/y = 9 and 70/x + 90/y = 12
Solving for x and y we get x = 10 km/hr and y = 18 km/hr

We know that Speed of the stream = 1/2 * (downstream speed - upstream speed)
= 1/2 (18 - 10) = 4 km/hr.
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