Distance Up and Down!

Algebra Level 3

A truck travels from X to Y.
Going uphill, it goes at 56 mph.
Going downhill, it goes at 72 mph.
On level ground, it goes at 63 mph.
If it takes 4 hours to travel from X to Y, and 5 hours to come back, what is the distance between X and Y? (the answer should be in miles)


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