Time Speed Distance
Practice Questions - Time Speed and Distance
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Q11) Two trains running in the opposite direction cross an electricity pole in 20 seconds, 15 seconds
respectively and can cross each other in 19 seconds. Find the ratio of their speeds: 1) 3:4 2) 1:4 3) 3:2 4) 5:3
Let x m/sec, y m/sec be the speeds of the two trains. Length of the two trains is 20x meters,15y meters A.T.Q. 20x + 15y = 19(x + y) ; x = 4y ; x:y = 1:4 Hence, option 2. Q12) A train travelling at 54 Km/hr passes a tunnel in 35 seconds and an electricity pole in 20 seconds. What is the length of the tunnel? 1) 225 m 2) 175 m 3) 240 m 4) 525 m
Length of the train is  Let y be the length of the tunnel. A.T.Q.  Hence, option 1. Q13) A train 160 m long passes a tree in 16 seconds. How long will it take to cross a bridge 250 m long? 1) 25 sec 2) 31 sec 3) 41 sec 4) 15 sec
Speed of the train = 160/16 = 10 m/sec  Hence, option 3. Read More: Problems on TrainsDownload: Practice Questions on the Concept of TrainsQ14) A train of length L meters travelling at a speed S m/sec will cross a mango tree in how many seconds.
Hence, option 2. Q15) A 135 m long train running at 63 Km/hr will cross a 250 m long tunnel in what time? 1) 21 sec 2) 11 sec 3) 22 sec 4) 20 sec   Hence, option 3. |