Bunuel
A man drove from Town A to Town C through Town B without stopping at any point. If the average speed of the man for the whole journey was 160/3 kilometers per hour, what was the average speed with which the man drove from Town A to Town B?
(1) The distance between Towns A and B was 25 kilometers
(2) The man drove from Town B to Town C at an average speed of 60 kilometers per hour
Breaking Down the Info:In order to know the average speed from A to B, we need to know the time taken to travel from A to B, and the distance from A to B.
Statement 1 Alone:We have the distance, but we still need to know the time. Statement 1 alone is insufficient.
Statement 2 Alone:This is not useful unless we have the distance from A to C and the distance from B to C. We can only infer the average speed from A to B is less than 160/3. Statement 2 alone is insufficient.
Both Statements Combined:We don't have any information about the time taken to travel from A to B, so combined it is insufficient.
Answer: E