if a 350m long train runs at a speed of 50km/h, then how much time wil

1.	if a 350m long train runs at a speed of 50km/h, then how much time will it take to cross a 150 m long platform
Answer» en Speed Of Train= 50km/h Length of Train = 350m Length of PLATFORM= 150m To Find how MUCH TIME will it take to cross a 150 m long platform? Here's, $~~~~~~~~~\sf \: Speed = 50km/h \\ \sf Speed= 50× \frac{ 1000m}{3600s} \\ \sf Speed= \frac{ 125m}{9s}$ $\sf \: time \: taken \: \: \| \: \: \: \: \: \: 1 \: \: \: \: \: \: \| \: x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \: distance \: cover \| \: \: \: \: \dfrac{125}{9} \: \: \: \| 150 + 600 = 750$ Direct Variation $\implies\sf \: \dfrac{1}{ \dfrac{125}{9} } = \dfrac{x}{750}$ $\implies\sf \: \dfrac{9}{125} = \dfrac{x}{750}$ $\implies \sf \: x = \dfrac{750 \times 9}{125}$ $\implies\sf \: x = 9 \times 6$ $\underline{\boxed{\sf \: x = 54 \: sec}}$ 54 SECOND will it take to cross a 150 m long platform.

if a 350m long train runs at a speed of 50km/h, then how much time will it take to cross a 150 m long platform

Answer»

Speed Of Train= 50km/h
Length of Train = 350m
Length of PLATFORM= 150m

To Find

how MUCH TIME will it take to cross a 150 m long platform?

Here's,

$~~~~~~~~~\sf \: Speed = 50km/h \\ \sf Speed= 50× \frac{ 1000m}{3600s} \\ \sf Speed= \frac{ 125m}{9s}$

$\sf \: time \: taken \: \: | \: \: \: \: \: \: 1 \: \: \: \: \: \: | \: x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \: distance \: cover | \: \: \: \: \dfrac{125}{9} \: \: \: | 150 + 600 = 750$