Question

two buses leave at the same time.
one travels west at 40 mph.
the other goes north at 30 mph.
When will they be 400 miles apart?
(30t)^2 + (40t)^2 = 400^2
30t+40t=400
70t=400
t= 400/70
=5.71hrs
After 5.71hrs they will be at 400miles apart.
Deez N***

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