Bunuel wrote:
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 60 miles.
it took 2hrs for cyclist N to overtake..
stat1: the relative distance of M and N will be 40 miles.. speed of N is 60,,,suff
stat2: again we can calculate the speed of each,,suff,,
ans D