Cyclist M leaves point P at 12 noon and travels at constant velocity ... ...

Cyclist M leaves point P at 12 noon and travels at constant velocity in a straight path. Cyclist N leaves point P at 2 PM, travels the same path at a constant velocity, and overtakes M at 4 PM. What was the average speed of N?

(1) The velocity of Cyclist M was 20 miles per hour.

(2) When Cyclist N overtook Cyclist M, both had traveled 80 miles.


(A) if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Exercise Set B