Reginald P. answered • 04/23/15

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d= rt

From X to Y

d

_{1}= 480tFrom Y to X

d

_{2}= 460(t + .5)Distances are the same , so

d

_{1}= d_{2}or 480t = 460(t + .5)Simplify and solve:

20t = 230 or t = 11.5 hours

On the return trip t = 11.5 + .5 = 12 hours