Question

A 360-metre-long train running at a speed of 64
kmph will take how much time to cross another
270-metre-long train running in the opposite
direction at a speed of 56 kmph?​

Answer 1

Step-by-step explanation:

Speed = 45 Km/hr = 45*(5/18) m/sec

= 25/2 m/sec

Total distance = 360+140 = 500 meter

Time = Distance/speed

\begin{aligned}

= 500*\frac{2}{25} = 40 seconds

\end{aligned}

Answer 2

Answer:

Relative speed = (120 + 80) km/hr

=200 x(5/18)m/sec

=500/9 m/sec.

Let the length of the other train be x metres.

Then,(x + 270)/9=500/9

x + 270 = 500

x = 230. hope it helped you