# GMAT 考满分题库

Manhattan - - 12

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?
• A3:4
• B10:13
• C5:6
• D13:10
• E4:3

|

• 按热度
• 按顺序