please help...
A train of length 200 m travelling at 30m/s overtakes another train of length300 m travelling at 20 m/s in the same direction on a parallel track. The time taken by the 1st train to cross the 2nd is
a. 30 s
b. 50 s
pls tell me how to do this...

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

so total 50 s.???

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

Looking for something else?

Not the answer you are looking for? Search for more explanations.