time and distance Practice Question and Answer
4Q: A cow was standing on a bridge, 5m away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this cow ran towards the the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the lenght of the bridge in meters assuming the speed of the train is 4 times that of cow ? 92855 35b5cc705e4d2b4197774f249
5b5cc705e4d2b4197774f249- 122 mtsfalse
- 228 mtsfalse
- 332 mtstrue
- 434 mtsfalse
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Answer : 3. "32 mts"
Explanation :
Answer: C) 32 mts Explanation: let 'b' be the Length of bridge from cow to the near end of the bridge and 'a' be the distance of the train from the bridge. 'x' be speed of cow => '4x' speed of trainThen the total length of the bridge 2b + 10.(a-2)/4x = b/x=> a-2 = 4b........(1)Now if it had run in opposite direction(a+2b+10-2)/4x = (b+10-2)/x=> a - 2b = 24......(2)Solving (1) and (2)b = 11 , Therefore length of the bridge is 2 x 11 + 10 = 32mts.
Q: Train A crosses a stationary train B in 35 seconds and a pole in 14 seconds with the same speed. The length of the train A is 280 metres. What is the length of the stationary train B?
1754 05d860c21bd0b79109e784d21
5d860c21bd0b79109e784d21- 1360 metresfalse
- 2480 metresfalse
- 3400 metresfalse
- 4Cannot determinedfalse
- 5None of thesetrue
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Answer : 5. "None of these"
Q: A 300-meter-long train moving with an average speed of 126 km/hr. crosses a platform in 24 seconds. A man crosses the same the same platforms in 5 minutes. What is the speed of man in meter/second?
1379 05d860a43bd0b79109e784545
5d860a43bd0b79109e784545- 11.5 metre/secondtrue
- 21.2 metre/secondfalse
- 31.5 metre/secondfalse
- 4Cannot be determinedfalse
- 5None of thesefalse
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Answer : 1. "1.5 metre/second"
Q: The ratio between the speed of a train and a car is 18:13 respectively. Also, a bus covered a distance of 480 kms in 12 hours. The speed of the bus is five-ninth the speed of train. How much distance will the car cover in 5 hours?
1765 05d860824c1ed1701670c6397
5d860824c1ed1701670c6397- 1250 kmfalse
- 2280 kmfalse
- 3260 kmtrue
- 4Cannot determinedfalse
- 5None of thesefalse
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