You can
put this solution on YOUR website!x=speed of one train
x-9=speed of the other train
mph(hr)=total distance
4(x)+4(x-9)=196---------------------------------because the sum of 4 hours times both speeds will give you the total distance
Simplify
4x+4x-36=196
Combine like terms
8x-36=196
Add 36 to each side
8x=232
Divide by 8
x=29
[x=speed of one train]
[x-9=speed of the other train]
speed of one train= 29mph
speed of the other train= 20mph
