Exhibit
A certain train will travel from City A to City B. and then back to City A along the same route. The train is scheduled to spend a total of T hours traveling lime for the round-trip. The train travels from City A to City B in 13 hours, traveling at an average speed of 25 miles per hour. If the train is to arrive exactly on schedule, at what average speed must the train travel from City B to City A ?
A)
B)
C)
D)
E)
The sequence a1, a2, a3 ,,,,an is defined by
In a competition, a certain contestant scored either 2 points or 4 points in each round of the competition. This contestant's average (arithmetic mean) score for the entire competition was 3.8 points per round.