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Buses and trucks and two cities from party a and b have relatively open_6565

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					Buses and trucks and two cities from party a and b have relatively open

Buses and trucks and two cities from party a and b have relatively open, four
hours later, the two cars to meet again, buses, 3 hours to city b from the
city and trucks, 90 kilometers, how many kilometers apart of two cities? [with
equations.

4 (x, y) = s 7x = s, 7y 90 = s one for the bus speed, the x, y for truck speed
for party b s distance of two cities. Three unknown, three equation, the
solution will get an answer!!!!!!!!!! The solution: s = 360 kilometers! Thank
you!!!!!!!!!!

Set for x, truck speed bus speed for y apart: 4 (s) = s x y, Buses arrive 3
hours: 3 x = 4y observed, Van driving for three hours, it is proved 4y 90km -
3 x = 90: j solution to s = 360 equations.