two trains leave at the same time traveling in opposite directions. If one train is going 3 times as fast as the other train and the trains are 240 miles apart after 1.5 hours, then how fast is each train moving. Help please

Question

two trains leave at the same time traveling in opposite directions. If one train is going 3 times as fast as the other train and the trains are 240 miles apart after 1.5 hours, then how fast is each train moving.  Help please

anonymous · Answer

You have to set up a distance rate and time equation

anonymous · Answer

d=rt

anonymous · Answer

One second I'll set it up

anonymous · Answer

|dw:1409185923345:dw|

anonymous · Answer

so would this work 3x-240<1.5

anonymous · Answer

no you would have to do 1.5x+1.5(3x)=240

anonymous · Answer

which would become 6x=240
x=40

anonymous · Answer

then you plug it into each train so train 1 is moving 40 mph while train 2 is moving 120 mph