assume missing data

A network of one-way streets is shown in the accompanying diagram. The rate of flow of cars into intersection A is 500 cars per hour, and 400 and 100 cars per hour emerge from B and C, respectively. Find the possible flows along each street. Intersection A 500 = fi + fo + fo Intersection B fi + f+ + fo = 400 Intersection C fi+ fs = f6+ 100 Intersection D 500 A fi f2 = f4 + fs B 400 f2 D fs f6 100