Time and Distance Question Practice Question and Answer
8Q: 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 ? 92783 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: A car travelled 80% of the distance from town A to B by traveling at T hours at an average speed of V km/h. The car travels at an average speed of S km/h for the remaining part of the trip. Which of the following expressions represents the average speed for the entire trip?
13476 05e84293441a4013349c13fc1
5e84293441a4013349c13fc1- 112VS/(9V+S)false
- 25VS/(4S+V)true
- 3VT/3Sfalse
- 49VS/(4S+V)false
- 5None of thesefalse
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Answer : 2. "5VS/(4S+V)"
Q: Anoop travels first 1/3 of the total distance at the speed of 10 km/hr. and the next 1/3 distance at the speed of 20 km/hr. and the last 1/3 distance at the speed of 60 km/hr. The average speed of Anoop is-
4653 060f7d41d5ae2256f5e7fb4c2
60f7d41d5ae2256f5e7fb4c2- 118true
- 221false
- 314false
- 416false
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Answer : 1. "18 "
Q: A man can swim to a place 120 km distant and come back in 35 hours. He finds that he can swim 6 km against the stream in the same time as 8 km with the stream. Find the ratio of speed of man in still water to that of stream?
3777 05eb111058870e50a27e0e9d8
5eb111058870e50a27e0e9d8- 15 :2false
- 24 : 7false
- 37 : 1true
- 42 : 9false
- 5None of thesefalse
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Answer : 3. "7 : 1"
Q: Distance between A and B is 1200 km. If they start moving towards each other at same time, they will meet in 24 hrs. If A starts 10 hrs after B, then they will meet in 20 hrs. What are their respective speeds?
3347 1611f6a71c5945f0fc8699179
611f6a71c5945f0fc8699179- 130 kmph, 20 kmphtrue
- 235 kmph, 25 kmphfalse
- 340 kmph, 25kmphfalse
- 425 kmph, 35 kmphfalse
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Answer : 1. "30 kmph, 20 kmph"
Q: A wheel travels a distance of 22 km in 2500 revolutions. What is the diameter of the wheel?
3210 05feee4f71f464d740159f012
5feee4f71f464d740159f012- 11.4 mfalse
- 22.8 mtrue
- 35.6 mfalse
- 4None of the abovefalse
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Answer : 2. "2.8 m"
Q: In a 1500 m race, Chaitali beats Vrunali by 100 m and in 1200 m race, Vrunali beats Krutika by 75 m. If Chaitali and Krutika are compared, then for how much m Chaitali will beat Krutika in 900 m race?
3021 05e78bd6950339c736661871e
5e78bd6950339c736661871e- 1115 mfalse
- 2112.5 mtrue
- 3110 mfalse
- 4120 mfalse
- 5135 mfalse
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Answer : 2. "112.5 m"
Q: 29 boys are standing in a line such that distance between any two consecutive boys is same . A teacher takes 7 seconds to reach from first boy to 15th boy. How much more time (in seconds) will he take to reach the 22 boys?
3014 05f328492a19eae5979ff6ecd
5f328492a19eae5979ff6ecd- 13.5true
- 24false
- 32.5false
- 43false
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