Wednesday, March 11, 2015

Maths Test.....problem related to trains...

Ques-01
A woman sitting in a train which is traveling at 50 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass her. If the goods train is 280 m long, find its speed.?
A) 60B) 62
C) 64D) 65


Ques-02
2 cogged wheels of which one has 32 cogs and other 54 cogs, work into each other. If the latter turns 90 times in three quarters of a minute, how often does the other turn in 8 seconds?
A) 48B) 27
C) 38D) 36

Ques-03
A jogger is running at a speed of 9 km/hr alongside a railway track is 240 meters ahead of the engine of a 120 meters long train running at 45 km/hr in the same direction. In how much time will the train  pass the jogger ?
A) 48 secB) 36 sec
C) 18 secD) 72 sec

Ques-04
A train travelling at a speed of 75 km/hr enters a tunnel  km long. The train is  kmlong. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?
A) 2.5 minB) 3 min
C) 3.2 minD) 3.5 min 

Ques-05
A train is traveling at 48 km/hr . It crosses another train having half of its length , traveling in opposite direction at 42 km/hr, in 12 seconds. It also passes a railway platform in 45 seconds. What is the length of the platform ?
A) 500B) 400
C) 360D) 480

Ques-06
Length of a train is 120 m more than the length of another train. When they are travelling in opposite direction,they crosses each other in 20 sec but when they travel in same direction, then the faster train crosses the slower one in 2 min. If the speed of slower train in 45 km/hr, then find the speed of faster train ?
A) 63 km/hrB) 64 km/hr
C) 62 km/hrD) 65 km/hr  

Ques-07
A train has crashed twice during its entire trip. First time it meets with an accident after 120 km and thus its speed reduced to 2/3rd of original. After 160 of that,it again crashed and thus its speed becomes 1/3rd of original speed. Due to these accidents,the train reached its destination 6 hr late. If,both the accidents had occurred 30 km further than the train would have reached the destination  1 3/4 hours earlier than previous time. Find the original speed of train ?
A) 61 km/hrB) 60 km/hr
C) 62 km/hrD) 65 km/hr 

Ques-08
A person can see up-to 400 m in fog.when he was travelling at a speed of 4 km/hr then, he saw a car coming from behind him,after 3 min of that,the car crossed him and disappeared. If the length of the car is 200 m. Find the speed of car ?
A) 20 km/hrB) 22 km/hr
C) 24 km/hrD) 26 km/hr

*answers after 8 pm
Best of Luck

Answers
1-B
2-B
3-B
4-B
5-B
6-A
7-B
8-C

No comments: