Recent content by gracy

If there will be mixture of three solutions of equal volume we will divide it by 3, right? Please try to answer this as well.

As I am also attaching solution along with the problem there is no point in posting this thread in homework forums . In the following question (solution is also there) https://s29.postimg.org/omlnt73lz/IMG_20170407_090748.jpg https://s18.postimg.org/hsuxm5uvt/IMG_20170407_090805.jpg why are we...

Could you please elaborate your post #12. I'll be extremely thankful.

Time = distance/ speed Time taken by the two trains to cross each other = distance to cross/ relative speed (as both are moving) Distance to cross =sum of length of trains Therefore Time taken by the two trains to cross each other = sum of length of trains/relative speed of trains Right?

Could you please explain a bit more?

A similar type of problem I have come across is as follows Two train each of length 100 m are running on parallel tracks. One overtakes the other in 20 seconds and one crosses the other in 10 second. Calculate the velocities of two trains. I just want to ask what's the difference between...

I think it is same as asking time taken by trains to cross each other

Equal to sum of the two train's lengths I don't know how to answer this.

https://s22.postimg.org/yhjymuoap/crossing.png

Should not the question mention what their (the two train's) initial separation was?

Two trains having lengths of 120 m and 100 m are running in the opposite directions with velocities 40 km/h and 50 km/h . In what time they will completely cross each other? In the solution it's given that Time taken by the two trains to cross each other = sum of length of trains/relative speed...

But there is + AB as well .

Is your "hint" supposed to take me on any helpful page ? I am unable to click on it though.

What's this?

Which theorem is it? @Isaac0427 your answers are really helpful :smile: