Question 886238
I don't know how to draw the diagram, but you could use a simple line with car X's arrow headed one way and car Y's headed the other.
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If they travel 206 miles in 2 hours, they travel 103 miles in 1 hour.
Any combination that equals 103 will be correct.
2X + 2Y = 206, therefore
X + Y = 103
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If X is 50, then Y is 53
If X is 1, then Y is 102 (and Y had better slow down!)
If Y is 60, then X is 43
etc, etc etc
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You can set up an equation, but cannot solve this without more information.