Given that a is the average (arithmetic mean) of the first nine positive multiples of six and b is the median of the first twelve positive multiples of six, what is the ratio of a to b?
A. 3:4
B. 10:13
C. 5:6
D. 13:10
E. 4:3![]()
A. 3:4
B. 10:13
C. 5:6
D. 13:10
E. 4:3
