Train A has left 1hr Prior. This means with the speed mentioned, it has already traveled 15m in that hour leaving us with a distance of 190-15=175
I just had a doubt why are considering 175 = 25x time
I understand that 25 is the added speeds
but we usually take total distance when we add the added speeds right
This is super confusing
@Adnan
The reason we subtract in this case is that A is moving towards B (not away from B), which means that the distance reduce. In other words, they are coming closer.
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So we consider the reduced distance in this case Cool