Question

give the solution of the question in the picture step by step.​

Answer 1

Answer:

When trains are coming from opposite directions they will cross each other rapidly . In other words there relative speed will be

$70 + 100 = 170 \: kmph = 170 \times \frac{5}{18} \frac{m}{s}$

So time taken to travel 700 + 575 m = 1275 m

=

$\frac{x}{t} = \frac{1275}{170} \times \frac{18}{5} = 27 \: s$

Answer 2

Answer:

Relative speed would be 70+100=170km/hr

Total distance=700+570=1275

Time=distance/speed

1275/170×5/18

=27s