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**Help with homework??**

Runner A, who runs with an average speed of 3.0 m/s, starts out at 3:00 P.M. Runner B, who runs with an average speed of 4.0 m/s, starts after A from the same place exactly 5 min later.

a.) At what time will runner B catch up with runner A?

b.) If the runners stop when B catches A, how far do they run?