Related Questions

The respective ratio between the speed of a speed of the car, bus and train is 5 : 9 : 6. The average speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?
A 82
B 72
C 67
D 84
Train X leaves Dhaka at 10:00 AM and travels East at a constant speed of x miles per hour . If another Train Y leaves Dhaka at 11:30 AM and travels east along the same tracks at speed 4x/3 , then at what time will Train Y catch Train X ?
A 4 PM same day
B 2 PM same day
C 6 PM same day
D 1 PM same day
A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction . If the speed of first train is 30 km / hr, what is the speed of second train?
A 48km /hr
B 54 km / hr
C 60 km / hr
D 72 km / hr
A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h in 3 minutes . The speed of the other train is 90 km/h. Find the length of the train .
A 5940 m
B 5490 m
C 4950 m
D 4590 m
A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is
A Zero
B One
C Less than one
D More than one
At 10 a.m. two trains started travelling toward each other from stations 287 miles apart. They passed each other at 1:30 pm the same day. They average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour. which of the following represents the speed of the faster train, in miles per hour?
A 38
B 40
C 44
D 48
The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together?
A 82 km /hr
B 72 km / hr
C 67 kms /er
D 84 km / hr
How may seconds will a 500 meter long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr ?
A 25
B 30
C 40
D 45
How many seconds will a 500 metre long train take to cross a man walking with a speed of 3km/hr in the direction of the moving train if the speed of the train is 63km/hr?
A 25
B 30
C 40
D 45
A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is --
A 66 km/hr
B 54 km/hr
C 48 km/hr
D 82 km/hr

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