Time and distance are important and unavoidable topics for all competitive exams.
Speed = distance/time,Time = distance/speed,Time = distance/speed
X km/h = (x × 5/18) m/sec
X m/s = (x × 18/5) km/hr
Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr, then the average speed during the whole journey is (2xy/x+y) km/hr.
1. A cyclist covers a distance of 750 m, in 2 min 30 sec.what is the speed in km/ hr of the cyclist?
A. 18 km/hr
B. 22 km/hr
C. 25 km/hr
D. 28 km/hr
2. A dog takes 4 leaps for every 5 leaps of a here but 3 leaps of a dog are equal to 4 leaps of the here.compare their speeds?
A. 12:15
B. 14:17
C. 16:15
D. 16:18
3. Which of the following trains is the fastest?
A. 25 m/sec
B. 1500 m/min
C. 90 km/hr
D. None of these
4. A man takes 5 hours 45 min.in working to a certain place and riding back. He would have gained 2 hours by riding both ways. The time he would take to walk both ways is....
A. 7 hours 30 min
B. 7 hours 45 min
C. 11 hours 45 min
D. 11 hours 56 min
5. A person crosses a 600 m long street in 5 minutes. what is his speed in km per hour?
A. 7.2
B. 8.4
C. 10
D. 11.6
6. A car is running at a speed of 108 kmph. What distance will it cover in 15 seconds?
A. 45 metres
B. 55 metres
C. 450 metres
D. Cannot be determined
7. How long will a boy take to run around a square field of side 15 meters .if he runs at the rate of 9 km/hr?
A. 50 second
B. 52 second
C. 54 second
D. 56 second
8. A man walking at the rate of 5 km/hr crosses a bridge in 15 minutes. The length of the bridge is ...
A. 1000
B. 1250
C. 1275
D. 1350
9. A man in a train notices that he can count 21 telephone posts in 1 minute. if they are known to be 50 meters apart, then at what speed is the train traveling?
A. 55 km/hr
B. 57 km/hr
C. 60 km/hr
D. 63 km/hr
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