Time and distance

Intellisy Coaching
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5 Questions on Time and Distance

Intellisy Coaching
Created by Intellisy Coaching over 1 year ago
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Question Answer
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour? A. 3.6 B. 7.2 C. 8.4 D. 10 Answer: Option B Explaination:- (600/5X60)X18/5 7.2 km/hr
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1 hours, it must travel at a speed of: A. 300 kmph B. 360 kmph C. 600 kmph D. 720 kmph Answer: Option D Explanation: Distance = (240 x 5) = 1200 km. Speed = Distance/Time Speed = 1200/(5/3) km/hr. [We can write 1(2/3) hours as 5/3 hours] Required speed =1200 x 3/5 km/hr = 720 km/hr.
Walking at the rate of 4 kmph a man cover certain distance in 2 hr 45 min. Running at a speed of 16.5 kmph the man will cover the same distance in. A. 12 min B. 25 min C. 40 min D. 60 min Solution: Option(C) is correct Distance = Speed × time Here time = 2hr 45 min = 11/4 hr Distance = 4×11/4=11 km New Speed =16.5 kmph Therefore time = D/S=11/16.5=40 min
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. 4 B. 6 C. 8 D. None of these Solution: Option(D) is correct Due to stoppages, it covers 9 km less. Time taken to cover 9 km = 9/54×60 = 10 min.
wo trains starting at the same time from 2 stations 200 km apart and going in opposite direction cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds? A. 11:9 B. 7:3 C. 18:4 D. None of these Solution: Option(A) is correct In same time, they cover 110 km and 90 km respectively. For the same time speed and distance is inversely proportional. So ratio of their speed = 110:90 = 11: 9