Question

A good train runs at a speed of $72$ km/hr and crosses a $250$ m long platform in $26$ seconds. What is the length of the goods train?

• A. $130$ m
• B. $200$ m
  
• C. $270$ m
  
• D. $170$ m
  

Answer 1

The correct option is C $270$ m

Speed of the train $=72km/hr=72\times \frac{5}{18}m/sec=20m/sec$
Let the length of the goods train be x m. Then $\frac{250+x}{20}=26\Rightarrow 250+x=520\Rightarrow x=270m$