SOLUTION: I'm really terrible... I tried hard to answer but I think my answer is wrong. My answer to the word problem I'm about to ask now is 3hrs and 33 minutes. I badly want to show my so

Question 551220: I'm really terrible... I tried hard to answer but I think my answer is wrong. My answer to the word problem I'm about to ask now is 3hrs and 33 minutes. I badly want to show my solution but I kind of misplaced it so here is my word problem.
Two buses starts out from the same terminal and travel in opposite directions at the rates of 80 kph and 70 kph, respectively. In how many hours will they be 500 kilometers apart?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Two buses starts out from the same terminal and travel in opposite directions at the rates of 80 kph and 70 kph, respectively. In how many hours will they be 500 kilometers apart?
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Going in opposite directions, their speeds are added --> 150 km/hr
----
d = r*t
t = d/r = 500/150
t = 3.333 hrs = 3 hr 20 mins
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