Question

A train running at a speed of 126 km/h crosses a car running at a speed of 72 km/h in 40 seconds when both are running in the same direction. What will be the length of the train in meters?

A. 500 meters

B. 600 meters

C. 900 meters

D. 450 meters

1. D
2. B
3. C
4. A

Answer 1

Correct Answer - Option 2 : B

Given: 

Speed of train = 126 km/hr

Speed of car = 72 km/hr 

Formula Used: 

Distance = speed × time 

Calculation: 

Length of train,

⇒ (speed of train - Speed of car) × 5/18 × time 

⇒ Length of train = 54 × 5/18 × 40 = 600 meters 

∴ The length of train is 600 mtrs.