Practical Mathematics for Grade 12, Problem ID: 3683
The diagram shows a road network.
All cars drive in one direction from A to F.
The numbers represent the maximum flow rate in vehicles per hour.
Engineers want to construct a new road with a flow rate of 100 vehicles per hour. Drivers randomly choose the road at crossroads.
What new road decreases the capacity of the network (the number of vehicles at point F)?
Any of the two roads improves the situation.
The road from B to E
The road from C to D
It is not possible for a new road to worsen the situation.