Question

A passenger train of length $60\,m$ travels at a speed of $80\, km/hr$. Another freight train of length $120\, m$ travels at a speed of $30\, km/hr$. The ratio of times taken by the passenger train to completely cross the freight train when : (i) they are moving in the same direction, and (ii) in the opposite directions is :

• A. 44683
• B. 25-Nov
• C. 44622
• D. 44870

Answer 1

Answer: (D)

44870

Answer 2

$t _{1}=\frac{ x }{ v - u }=\frac{ x }{50}$
$t _{2}=\frac{ x }{ v + u }=\frac{ x }{100}$
$\frac{ t _{1}}{ t _{2}}=\frac{11}{5}$