Question 890723
r = speed of one of the trains, the slower train.


________________speed_____time_____distance
Either train_______r_________2________r*2
Other train________r+5_______2________(r+5)*2
TOTAL______________________________200-50=150


Solve for r:
{{{highlight(2r+2(r+5)=150)}}}


To finish, also compute r+5.