Question 1010253: A truck has left point A with a speed of 60 mph. After 2 hours a car has left point A with a speed of 90 mph. At what distance from point A will the car catch up with the truck?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website!
speed time distance
early slow 60 t+2 d
late fast 90 t d
That make sense according to the description? Hope so.
Now, you saw the variable assignments, and instead, MORE will be made.
speed time distance
early slow r t+h d
late fast R t d
Known variables, r, R, h.
Unknown variables, t, d.
System of equations will be 
Solve for a formula for d, only in terms of r, R and h.
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
A truck has left point A with a speed of 60 mph. After 2 hours a car has left point A with a speed of 90 mph. At what distance from point A will the car catch up with the truck?
With D being the distance from A, or the catch-up point, create the following TIME equation: 
Distance from A:  miles
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