Cars A, B moves towards each other, the distance between them at
the beginning is 250 mile, they meet after 2 hours. which one is
further away from its starting point when they meet?
1) When they met, A's speed was averaged 55m/hr
2) The average speed of B in entire trip was 70 m/hr.
Remember, when you are given average speeds between two points, this only represents the "constant speed needed to travel a particular distance in a particular time". What actually
happens between those two points is anyone's guess. It would be relatively easy to set up various scenarios where A and B meet all along the route given only the constrainst of (2) and the stimulus. Hence IMO A is the answer.
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993